Big Dick Energy - Chapter 4

The only problem with Lena’s plan to get the extra strength pill for sexually active omegas was that it required both of them to make the purchase.

Kara was appalled on Lena’s behalf when she called from the pharmacy, upset and unsure of what to do. Her growl echoed down the line when she demanded that Lena FaceTime with her so she could talk directly to the beta behind the counter.


The man looked intimidated when he saw the sweaty, angered expression on Kara’s face, and while she usually would have been diplomatic and kind, her rut put her in an entirely more aggressive mood.

“I’m her alpha,” Kara snapped, her protective tone almost antagonistic. “I asked her to pick the prescription up, so — so you had better give it to her, because if I have to come down there while in rut, I’ll—”

“I can accept verbal consent,” The beta croaked out anxiously, and Lena stepped away from the counter as he finally began filling the prescription.

“Did you just threaten the pharmacist for me?” Lena asked in a shocked whisper, and even through the phone, Kara could tell it excited the omega.

Kara growled without thought, her baser instincts ramping up the longer she went without Lena. She heard the softest whine from the omega in response.

The breathy submission only made Kara’s cock harder and she glanced down at the heavy erection that refused to soften. They were feeding off of one another in the worst ways, and Kara should have cared about that, except she was too far gone to even see the risks.

They had spent all night tangled in the sheets and each other, with Kara sinking deeper into a state that she never thought she would embrace.

Wanting to be with Lena was like an addiction that Kara couldn’t satisfy, and her alpha needed more.


In the span of ten hours, they had used the entire pack of condoms that Lena purchased especially for her rut, even though Kara had only knotted once. Just the memory of it was enough to make her erection jump in excitement, and Kara mindlessly placed her hand around her shaft. The sensation of Lena’s cunt wrapped so tightly around the swollen base of her cock was better than the sex itself, and the sex was incredible.

Kara was shocked that Lena could even walk properly after hours of mating, yet the omega had slipped out of bed at seven in the morning to retrieve the birth control pills with a spring in her step.

Maybe it was the thought of being inside of Lena without wearing condom that caused the base of Kara’s cock to begin to swell – or maybe it was the way the omega suddenly angled her phone so that Kara could peek down her top.

Kara groaned at the sensation of the unexpected knot that formed in her hand. She doubled over in bed to try to soothe the discomfort of it expanding without being inside of Lena’s wet warmth.

“Hang in there. I’ll be back in about twenty minutes, and we can…” Lena caught her lip to silence herself and then whispered, “You know, before classes start. I’ll see you soon.”

Lena hung up, and Kara snarled in discontent at the thought of doing anything else other than the omega.

Classes.

Kara completely forgot they still needed to attend them.

Her one track mind expertly blocked out the rest of her responsibilities in pursuit of the only thing her alpha required most: Lena.

She rocked her hips to counter the way her fevered skin itched without the omega, and then nosed into the blankets to catch a whiff of Lena’s scent. It wasn’t enough, and the pressure at the base of Kara’s shaft only increased the longer she waited.

“Lena,” she whimpered pathetically, the agony of her arousal bringing tears to her eyes.

She tried to cradle the forming knot between the warmth of her palms, though it seemed so much bigger than before and it was still expanding.

Kara rolled off the bed to search her bag for the suppressors that Miss Grant had given her, but they were nowhere to be found. In the back of her mind, she wondered if Lena took them away to stop her from using them.

When Kara stood up, she noticed how engorged her knot was and how it continued to thicken. The prominent bulge was at least twice the size it should have been. Bright purplish red and swollen with thick veins, it looked obscene and so much bigger than her closed fist.

Lena would never be able to take such a monstrous size.

The thought of how tight Lena was simultaneously brought pleasure to Kara’s alpha and caused her to slip into a panic. She sucked in quick, shallow breaths and tried not to trip over herself in her hurry to open her laptop.

Kara could only make her own assumptions that her first rut and too much sex had resulted in this immediate and hopefully not permanent consequence.

With such an immense knot, she might not be able to have sex with Lena again. The risk of hurting her would be too great and Kara wouldn’t be able to live with herself.

Kara spent five minutes furiously searching the internet for answers about her condition and made a horrifying discovery.

Her knot last night had never fully formed. This– this was her true size, and it was immense.

She felt a sickening twist in her gut as she considered how lucky they had been. Kara would have torn Lena apart if her knot had ballooned to such proportions inside of her.


To Kara’s dismay, even the knowledge of that didn’t reduce her swelling.

“Oh no, oh no, oh no,” Kara chanted under her breath, her fingers striking the keys so roughly she almost jammed a few.

She needed to find a solution to soften her knot before Lena returned.

Kara imagined the worst scenario as her paranoia increased: that Lena would be so intimidated by the size of her knot that she would no longer want to be with her.

Desperation caused Kara to skim read a thread where an alpha was seeking help on how to soften a knot.

Most of the suggestions were less than helpful, and she scrolled faster to find a solution to her time sensitive problem.

Make yourself come, always helps me.

Just find an omega and let them take care of it ;)

Punch your thigh, the pain will counter it!

Popping a knot is the least of your worries if you don’t have someone to lend a hand.

Do push-ups to redistribute the blood flow.

Kara nearly broke her laptop in her scramble to do push-ups, and by the time she reached twenty, the only thing she had accomplished was soaking her shirt in sweat.

The rut was hitting her hard, and she groaned as her muscles cramped and her temperature soared. She didn’t know many other alphas, and she definitely couldn’t email Professor Grant, because there was an eighty percent chance that the professor would kill her for not taking the suppressors, if Kara’s embarrassment didn’t end her first.

A small voice in the back of her head suggested a cold shower, and while it might have worked, she couldn’t risk leaving her room in such a state.

“Cold,” Kara uttered to herself, an idea springing through the fog of her rut. It compelled her to crawl to the mini fridge that she kept stocked up with soda.

The chilled blast of air made her shudder when she wrenched it open to grab two cans of coke.


With limited options, she did the only thing she could do and stuffed them down her pants.

The icy sensation made her yelp, and she whined and whimpered as she held them in place. She was willing to endure the ache in the hope that it would at least help.

Kara’s teeth chattered, and she hissed from the pain until it gradually ebbed to a welcoming numbness.

She stayed like that until she caught Lena’s scent in the air, and then quickly tossed the cans under her bed. The knot was partially gone, though her erection remained, and Kara struggled to get her pants on before Lena walked through the door.

“You owe me so many orgasms for having to go through that humiliating process,” Lena laughed as she entered the room, her mischievous grin faltering when she caught sight of Kara getting dressed. Her brows cinched together in a frown and she set the prescription on the night table as she peered at Kara in suspicion. “I thought we agreed to have a little fun before class—”

“Right, yeah, we were, but then I—” Kara gulped down the sweet fragrance of Lena and held back a moan of need as she forced herself to take a step back. “I realized if we did this now without the condoms, then I’d never let us leave this room. Our finals are so close. I can’t mess that up for us.”

Lena’s smile returned, far more flirtatious than before, and she wandered over to run her palms comfortingly over Kara’s biceps. “I see your point. I don’t mean to brag, but I am pretty great in bed.”

Kara trembled from Lena being so close, and then her willpower wavered.

Her hands wove around Lena’s back to pull her in for a demanding kiss before she could stop herself, and the omega melted into her embrace with a whimper. Lena palmed at Kara’s erection and the alpha instinctively unzipped her pants to let Lena’s hand push inside the open fabric.

“Wait,” Kara whined, her words at odds with the way her hips pushed forward to let Lena clasp her shaft. “Wait, we have to—we have to be smart, or I-I’ll—”

“Shhh, just let me take the edge off, and then we’ll meet up in the library during our study period.” Lena’s seductive lilt and lustful scent erased the worry that Kara should have been feeling.

Instead her libido was at the forefront of her mind and her alpha was making allowances that Kara would have never permitted out of rut.

She nodded along in agreement, and Lena stroked her cock with long, firm pulls that caused her eyelids to droop.

Kara moaned when the omega’s thumb teased over the head, smearing her arousal all around before she pumped her fist faster.

The smell of sex clouded Kara’s brain and she backed Lena into the wall to push her hand up the omega’s skirt.

Lena’s panties were exceptionally wet and Kara pressed her face into the crook of her neck to inhale the submissive pheromones that came off her in waves. She licked the spot where Lena’s skin was susceptible to a mating bite, and waited until she felt the omega gasp before pushing two fingers into her sex-swollen cunt.

The slick heat drew Kara in deeper, and she thrust upwards just to crook her fingers into the sensitive ridges inside of Lena.

The breathy cadence of Lena’s moan compelled Kara to thrust faster, and she strummed at the omega’s clit with the pad of her thumb.

“You know,” Lena exhaled, her jaw tensing from pleasure that she fought to hold off, “it would be just as fast to tug my panties down and push inside of me.”


Lena’s sultry tone was just as devastating to Kara’s senses as the seductive scents that came from the omega.

Kara’s cock throbbed in agreement and Lena quickened her hand after Kara groaned.

“We could use a condom for now,” Lena suggested, and the hot clench of her muscles begged Kara to give her what she wanted. “I bought more at the pharmacy.”

Lena’s rational plan made sense to Kara for just a few seconds – long enough that she rucked Lena’s thong down to her knees to look at her pussy – open and eager for Kara to take advantage of it.

Kara wanted the omega more than she wanted to breathe, and she grabbed Lena by the waist with a growl that caused Lena to spread her legs.

“This is your first rut, and I want to be here for you,” Lena whispered.

The soft confession was a reminder to Kara that above all else, they had cared about each for years as best friends. It was the concerned warmth in Lena’s eyes that knocked Kara out of her crazed mindset.

“You have. You’ve been the most supportive girlfriend.” Kara touched Lena’s cheek and moved to kiss her, and it could have been such a sweet and special moment between them if not for the way her body demanded more.

Their lips locked and Lena’s pheromones pleaded for sex, so much that Kara’s knot inflated again like one of the many pop-up ornaments that decorated lawns before the holidays. Instantly and fast. She whined at the sudden pressure, her hips jerking back when Lena’s fingers stroked low enough to graze it.

“Kara,” Lena gasped into her mouth and pulled back with a tone of honey and lust. “Is that for me?” Her raised eyebrow weakened Kara’s resolve, but she couldn’t risk Lena finding out about the problem with her knot.

“No,” Kara blurted thoughtlessly, and winced as Lena recoiled in confusion. “Yuh-yes, I mean, it is,” she corrected, her own pheromones giving away her conflicted emotions as she tried to ease Lena’s hand out of her pants without hurting her feelings. “It’s definitely for you—but class starts in ten minutes, and if we get stuck together—”

“We’ll be late,” Lena cut in with a frustrated sigh, and smoothed her hand down Kara’s chest.

“I wish it was the weekend so I could just stay here in your bed,” Lena lamented, and Kara nodded along rapidly, and went against everything her alpha told her to do as she helped Lena pull up her thong.

They hurried to grab their books and bags, and made it halfway across campus when Kara caught a few people staring at her with wide eyes. She slung her bag off her shoulder to hold it in front of her pants with a wince, then muttered under her breath, “Hey uh—did you maybe move my rut suppressors? I couldn’t find them this morning.”

Kara’s gaze lingered on Lena’s breasts and she almost missed everything the omega said due to her tunnel vision.

“—you won’t be mad?”

“Huh, nu-no, of course not,” Kara managed between inhaling deep breaths of Lena.

She should have tasted her before leaving, or fingered her a little longer to hear the moans catch in her throat. Kara was so fixated on how much she wanted to touch Lena that she took a moment to register that the omega was standing outside her classroom waiting on an answer.

“So you’re okay that I have them in my bag?” Lena asked under her breath, and touched her necklace self-consciously. “I just really want to be the one to help you through this and I’ve heard that a lot of alphas prefer natural methods.”

Kara’s eyes were following Lena’s fingers and she leaned into the omega as though ready to press her into the door. “Natural methods, right, yeah, that’s fine—I love natural methods,” she rambled, her mouth so close to Lena’s that she could feel every warm exhale.


“Great, so I’ll see you at the library later,” Lena intoned meaningfully, and hurried into the room before Kara could do something reckless.

It wasn’t until five minutes later when Kara was sitting in her own class with full body tremors that she realized that maybe this wasn’t such a great idea after all.

She felt sick without Lena by her side, her body ached all over, and she hadn’t eaten since yesterday morning. The lecture began, and she found she found it impossible to concentrate on taking notes.

Sweat beaded across the creases of Kara’s forehead, and no matter how many times she wiped the droplets with the sleeve of her shirt, more rained down on her notes. She swiped it off the pages with her fingers, and left behind sodden inky streaks that bubbled and warped. Kara furiously tried to write something, anything before her pen slipped for the hundredth time.

Her body worked against her as her fingers trembled, her muscles spasmed, and she began breathing heavier than normal.

Other students were starting to notice.

The concealer spray that Lena had spritzed Kara with was no match for the turbulent way her hormones spiked. The cloying reek of her rut filtered into the air, and the omegas in the room began to drift closer, magnetized beyond their control.

It was subtle at first, the quiet creak of a seat or the shuffle of papers that signaled someone growing restless. Kara barely noticed the ripple through the room as heads turned and classmates leaned closer towards her with immediate intrigue.

The betas rolled their eyes and carried on, but the few alphas in the lecture hall were agitated. They couldn’t pinpoint where the smell originated the same way the omegas could, and they released their own dominant scents to compete needlessly.

For a while that seemed to work, and a few omegas redirected their attention to the aggressive scents of the other alphas.

Kara might have been grateful if she had even noticed, but she was so caught up in her own misery that all she saw was Lena every time she blinked.

The omega was becoming the only thought in Kara’s head and her cock ached in the tight confines of her pants.

She tried not to rock in her seat as the ache unbearable with no end in sight, though her hips moved anyway.

She gave up entirely on trying to take notes, and inhaled the fragrance of the class. The scent of omegas grew stronger, with some switching where they sat just to get closer to Kara. One was brazen enough to settle down beside her and flash a smile, the fruity scent of her shampoo unable to hide the hints of her arousal.

“Are you okay?” Andrea asked, her soothing tone snapping Kara out of her thoughts long enough that she looked shocked at the sight of her. “Can I do anything to help, Kara?”

If the naughty inflection of her voice wasn’t enough, Andrea slid her hand onto Kara’s thigh, and Kara growled before she could control it. The intent was to warn Andrea to back off, but in Kara’s current state, all it did was embolden the omega to squeeze suggestively at her muscle.

“You poor alpha,” Andrea whispered, her seductive rasp unfortunately making Kara’s body respond, “Lena has no idea how to take care of you, but I do. Would you like that, Kara?”

Andrea’s hand was on the move and suddenly so was Kara.

She shot up so fast that her book and pen went flying. Her notes fluttered like confetti over the beta in front of her, and she grabbed her bag and bolted for the door without bothering to say a word to Andrea. She couldn’t when her throat was dry and raw, and her lips felt cracked from the scorch of her skin.

“You’re disrupting the whole class!” The lecturer bellowed, and suddenly everyone was staring at her with judgmental, laughing eyes.

Kara didn’t care. She needed to get out of that room, even if it cost her a passing grade, and she staggered, breathless and wild, into the empty halls.

With her backpack clutched to her chest, she forced herself forward, even though her knees wanted to give out.

Every piece of her ached, and itched, and burned and she would have clawed her own skin off right there and then if she hadn’t caught the faintest whiff of sweetness.

She followed it with a groan, stumbling over her own feet as she shuffled down the corridors—mindless and ravenous and aggressive while she sniffed and growled under her breath.

Kara wasn’t the type to empathize with zombies when she watched those shows, but it struck her in a brief snippet of clarity that she was just like one while in rut. She hungered for Lena, she wanted to feast on her and feel the throb of the omega’s pulse beneath her tongue.

Kara wanted her so completely that it was the single driving thought in her mind that kept her mobile.


People wandered in and out of classes and Kara prowled through them without ever seeing anyone.


Her alpha was using all of her senses to hunt down what it needed, and Kara finally found it when she noticed Lena entering the bathroom on the fourth floor of the Biology building.

There was no hesitation when Kara shoved through the door. No flicker of worry that an alpha had no right to be inside an omegas’ bathroom—that being caught would land her in the kind of trouble that might get her kicked out of college.

All she saw was Lena and her alpha moved faster than her subdued common sense.

“Kara,” Lena choked out in surprise, her startled expression fading to an almost bashful coyness as she took in the leering stance of Kara, all ready to pounce. “You aren’t supposed to be here. We have classes all morning. You’ll have to wait for our study date—”

It was undignified and desperate, but Kara couldn’t control the way she grasped at Lena’s hips and tried to push up her skirt. “I can’t-I can’t wait another minute. We’ll be quick. Please—p-please, let me, I need you,” she babbled, and backed Lena straight into the stall she was about to use.

The door swung shut on its own, then bounced back open a moment later. Kara didn’t care because Lena was here in her hands and her omega perfume filled up her lungs.

She was rucking Lena’s skirt up without hearing a word the omega was saying, and cupping her cunt with a groan of longing.

“—urning up.” Lena murmured, her soft words filled with concern. “I wanted to help you. Not torment you. Come here. I have the condoms in my bag—”

“We don’t need them,” Kara rumbled, pressing her face into Lena’s neck to suck on her pulse point.

The scrape of Kara’s teeth was more of a bite than usual and Lena mewled at the way Kara’s hands groped at her breasts and ass.

Kara rubbed her palm into Lena’s pussy and huffed at the intimate, sexual fragrance that told Kara’s alpha that the omega was ready.

There was no finesse in the way she tore open her pants, just pure unadulterated urgency to free her cock. Kara leaned so heavily into the omega that her shoulders pinned Lena to the flimsy wooden stall, and she kissed her with demanding ferocity. Lena submitted beautifully, her hands weaving into Kara’s hair to pull her closer, and Kara squeezed at Lena’s ass.

She used her thumb to push aside Lena’s thong and bucked upward to drive her cock into the hot silk of Lena’s pussy. It was better than all of their past experiences rolled into one. Lena’s tight walls wrapped wetly around her shaft and Kara was adrift in sensation. This wasn’t tender lovemaking or the passionate rutting of last night. It was wild desperation, and Kara charged her hips to bury herself inside of the omega.

Lena hissed and whined with the force of her thrusts, and then the whimpers died off to bestial grunts. Kara was all muscle and strength and roughness, and the whole cubicle shook from her lunges.

Lena clung onto her so tightly that her nails would leave bruises behind, and her raspy cries echoed in the bathroom. “Kara.”

Maybe it was the breathlessness of Lena’s moans or the wet hot contractions of her cunt as it opened for more of Kara’s shaft, but mere seconds later Kara erupted.

Thick, warm spurts throbbed out of Kara’s cock and she pushed it as deep as she could to empty it all inside of Lena. It was reckless, irresponsible and instinctive, and for the duration of her blissful release, Kara didn’t regret it all.

For the first time in their relationship, Lena experienced the rush of having a truly filled cunt and the excitement of it caused her to rub at her clit when Kara pulled out. Creamy seed dripped down her inner thigh and Kara watched, utterly enraptured by the way Lena scooped it up to furiously massage into her clit.

They stared at one another with wide, dark eyes, consumed with love and lust and urges so primal they couldn’t contain them.


“Kara, Kara, please,” Lena begged, not just with words but the very enthralling scent of an omega calling to her mate.

Kara sucked it in just to breathe it back out in a growl so low it was practically a vibration. “Don’t stop,” she commanded, her dominant pheromones growing in strength as she pushed her cock back into Lena’s rippling cunt.

Lena’s fingers worked even faster between her glossy folds and Kara hooked her hand under Lena’s left knee to hoist it up.

She slammed into her harder, the wider stance feeling better for the both of them, and Lena clutched at the door when Kara’s mouth returned to her neck. They were moving in unison, bucking and grinding and fucking like their very lives were at risk if they stopped.

The sweaty frenzy of their hips colliding in such a public place brought the thrill of danger. They should have been quiet, sneaky, and not so boldly obvious. Anyone that walked in would have heard the sloppy sound of Kara giving it to Lena so hard the whole row of stalls rattled.

There was no way to silence Lena’s rapturous moans, and even if there was, Kara wouldn’t have done it. She wanted to hear Lena’s pleasure, and she definitely felt it when the omega let out a strangled groan.

Lena’s tight passage convulsed around Kara’s cock so strongly that her hips were forced to stop. She gasped from the pull of Lena’s cunt and panted at the sudden intense release it drew straight out of her.

Kara gradually returned to herself after that — with Lena’s wonderful inner muscles still in orgasm. Each spasm around her shaft satisfied her alpha, and Kara breathed out a slow sigh of relief. She felt almost human again, and she nuzzled under Lena’s jaw with reverence until the full weight of what she had done hit her.

Panic pierced through their bubble of bliss, and Kara moved to pull out as she blurted, “Oh god, Lena-I’m-I can’t believe I-god I’m so sor—”

“Shh, stop it.” Lena drawled, lazy and languid in the way she brushed her lips against Kara’s and tangled her hand into the alpha’s hair to stop her from retreating. “You think I’d take your suppressors without knowing exactly what I was getting myself into?”

The air between them thickened with stunned silence and then Kara brow crinkled. “Wait,” she murmured, her eyes searching Lena’s amused ones with increased indignation. “So you planned for this?”

“Planned? No.” Lena laughed, the rich sound stealing the tension from Kara’s limbs. “Strongly hoped for it, yes.”

“But I could have hurt you,” Kara whispered, the thought of her outrageously sized knot enough to make her finally pull out.

“Kara, whenever you find a bug in your bedroom, you escort it outside in a little paper airplane you made just for that purpose,” Lena muttered with her nostrils flared and her eyes wide, as though Kara should know better than to think of herself as a threat to anyone, not even an insect. “I know who you are, Kara. I always have. You need to trust yourself more.”

The soothing caress of Lena’s palm against her cheek evoked a surge of emotion that Kara wasn’t prepared to feel. She swallowed it back and pressed herself into Lena’s compassionate, capable hands, then held onto her until the thudding of her heart returned to normal.

“I think we should skip our afternoon classes and I should get you back to your room,” Lena suggested with gentleness, and Kara gave in as she tried to come to terms with what her rut had done to her.

Kara was still flushed in the face as they returned to her dorm, though she no longer shook or reeked of sexual aggression. She sat down on her bed while Lena opened the fridge to search for a drink.

“What happened to the cokes that were in here yesterday?” Lena asked and glanced over her shoulder in time to see Kara duck her head.

“Kara?” Lena prompted in a tone Kara found particularly unfair, given her current rut.

Kara sagged lower in humiliation and chewed her lip, all while actively trying to ignore Lena’s raised eyebrow.

“When you were gone this morning, I got another knot,” Kara confessed. She couldn’t look Lena in the eye when she spoke, and kept her chin tipped towards her chest in embarrassment. “It was much bigger than the last one. I didn’t want to tell you because I thought I could handle it myself—”

“By drinking soda?” Lena cut in with a baffled scrunch of her brow.

“The cans were cold,” Kara mumbled in horror that she had to explain herself. “I wasn’t thinking clearly because I was worried that if you came back and saw it that you’d—well—realize you didn’t want to be with an alpha who can’t even knot in you.”

Lena perched on the edge of the bed next to Kara and waited until their eyes met before responding. “I sort of suspected that your knot hadn’t fully formed that first time, but I didn’t want you getting all self-conscious, so I chose not to mention it. Because of your extra attributes, I have a good idea of what it will look like, and for the record, I am sure I can handle it.”

From the determined expression on Lena’s face, Kara was certain they were about to find out.