Supernatural One Shots

Why Didn't You Tell Me

Alpha Dean x Omega Reader

First ever alpha/omega shot, hope you like it!! Reader enters a heat cycle while the guys are away on a hunt, only this time something is different...

Warning: SMUT

"Have you tried the archives at the library? Maybe they have some old records from '52 that weren't published in the papers."

You could hear Dean sighing through the phone and imagined him running his hand through his hair in aggravation. "Yeah babe, we looked yesterday. If we don't find this guys grave soon I'm gonna start torching all of em in town."

A sudden pain coursed through your lower abdomen, wincing slightly you failed to hide a whimper.

"Babe? Are you okay?" Hearing you in pain immediately brought out the alpha in Dean.

Shaking your head you stood up from the bed you shared with him, "Sorry, yeah I'm fine just stubbed my toe. Dean just relax, something will come through. Sam's bound to find the guys grave, and I'll keep looking on the laptop in case there's something we missed."

Dean let out a large breath, "Okay, I'm just tired of being here, away from you. Two weeks is a long time, I need to see you soon."

Feeling another pain slightly stronger than the last you frowned and bit your lip. Bending over slightly as you pushed against your abdomen you let out a slow breath. "I miss you too Dean, your gonna be home soon, just make sure that town is safe and then worry about getting back."

You could almost hear a whine from the other end, "Alright, I gotta go Sam just got back. I love you Y/N."

"I love you too Dean."

Hanging up you began walking towards the bathroom, switching on the light and reaching for the cabinet you were reaching for some painkillers when you noticed another bottle sitting beside it. Your eyes widened, you thought you were just cramping but seeing your old suppressants sitting there you knew, you were going into heat.

"Fuck."

Groaning you knew it was too late to stop it, you hadn't really been paying attention to your cycles since you were always with Dean anyway. After running into the Winchesters on a Wendigo hunt a year ago you'd immediately recognized Dean as your alpha, just as he recognized you as his omega. At first he'd been resistant, saying being with him would be too dangerous. But when you tried to respect his wishes and leave he realized he never wanted anything as badly as he wanted you.

You'd hunted with the brothers ever since, before that you'd only ever hunted alone. Being an unmated omega was risky, especially since you ran into dominating alphas too often for your comfort. Shaking your head you bent over to retrieve the heating pad from under the sink. Your first instinct was to call Dean and tell him to come home, the omega in you wanting nothing but your alpha here to take care of you.

But your hunter side kicked in, the boys had been hunting a vengeful spirit for two weeks already. If you asked them to come home now it would only allow the ghost to take another victim. No, you would just have to ride this out. You used to do it all the time when you were unmated, it hurt like hell but you would rather take the risk than let another innocent person die in that town.

Two days later you were beginning to regret the decision of not telling Dean, you also knew he was going to be pissed when he found out. The few times he called you'd been able to play off the pain you were in, but after the conversation this morning you were worried he'd began to get suspicious. Rolling over in the bed you buried your face into Deans pillow, his scent slightly soothing the ache you felt between your legs. Up until now you'd only faced the cramps, now you were beginning to grow slick with need. The thought of Dean knotting you began to play through your mind on repeat, making you whimper.

Just hang in there, it will be over soon.

Later that night you began to sweat, you felt as though your whole body were catching on fire. Forcing yourself to get out of the bed you slowly made your way into the library. Sitting at the table and opening your laptop you began trying to figure out why this heat was affecting you differently. After a few minutes your eyes grew wide at a particular passage you'd found.

The heat cycles of an unmated omega differ greatly from that of a mated one. Since the unmated omega has yet to find their alpha typically the cycle will only last a few days and include common symptoms such as cramping and an increased s****l drive. For a mated omega the heat cycle differs, along with lasting longer the cycle will intensify the longer the omega goes unsated. The omegas body needs the knot of their alpha to satisfy their biological need to mate, without it the omega can develop fevers that will weaken the body. Once knotted the cycle should begin to wane leaving the omega to recover.

Closing the laptop and bringing up both hands you began rubbing them over your face. You'd noticed your body beginning to weaken but had tried to write it off as just being tired. Slowly standing up you winced at another yet stronger cramp hitting you. Grabbing onto the chair for support you waited for it to pass before making your way back into your bedroom. As you reached the bed you caught Deans strong scent from the sheets causing you to clench your teeth, you could feel your juices coating your folds. As you clenched your thighs together you moaned slightly at the feeling.

Crawling into the bed you let out a large breath, you could feel the energy draining from your body. Just then your phone rang from under the comforter. Slipping a hand inside and pulling it out you saw Deans name on the screen, trying to control yourself you slide the button to answer.

"Hey Dean."

"Hey sweetheart, we finally got the bastard. We're leaving the motel now we should be home in a few hours. How's my girl holding up?" Knowing Dean would be back soon made a whole new wave of desire hit your body, you were sure by now you'd stained the sheets.

"I'm fine, um, just hurry back okay?"

Dean could hear something was off in your voice, "I will, are you sure your okay? You sound, I don't know, different."

"Yeah Dean I'm," Squeezing your eyes shut as another strong cramp coursed through your body you couldn't hold back the whimper you released at the pain. Noticing Dean had gone silent you instantly knew he figured it out.

"Y/N, are you in heat?"

A moan escaping your lips was the only answer he needed, "Damnit babe why didn't you tell me sooner!" You could hear the trunk of the impala being slammed shut. "Sammy lets go! Sweetheart I'm coming okay, just hang in there. How long has it been?"

"Almost three days..." You winced at the growl Dean emitted. You knew the silence afterward was his way of controlling his anger, he always hated knowing you were in pain, the alpha in him needing to protect you.

"Sweetheart why didn't you tell me sooner? I would have come back you know that!"

Feeling tears beginning to form you also felt yourself growing tired, "I wanted to but you needed to finish the hunt. I thought I could handle it but, Dean it hurts so much." Hearing the pain in your voice at the end and the sniffling he knew meant you were crying caused a sharp pain to cut through his chest, his omega was suffering.

Softening his voice as he gripped the wheel tighter he took a deep breath, "Listen baby, I'm on my way okay, just a little bit longer and I'm all yours okay?" Deciding to try and distract you he smirked at the road in front of him, "Besides after so long away this really doesn't change what I had planned for you, just sort of shortens the first round a bit." Thinking you would at least chuckle at that Deans worry returned when he didn't get a response.

"Babe?"

Not being able to fight it anymore you'd passed out, the phone slipping from your hand and hitting the floor. "Y/N!" Throwing his phone onto the seat between him and Sam Dean growled once more and pushed the gas pedal further down, determined to reach you.

Two hours later Dean had to of broken a record since typically it should have taken four to reach the bunker. Slamming on the brakes Dean jumped from the car and began running towards the front door, Sam right behind him. The moment they entered both men were hit hard by your strong heat scent. Being a protective alpha Dean immediately turned around and growled at Sam, causing him to stop at the top of the stairs.

Tossing him the impala keys Dean nodded towards the door, Sam could see his eyes were almost black, his stance one of caution. Dean always knew Sam was no threat to you, but when he entered full alpha mode just like now, he couldn't always control his responses. Getting the hint Sam immediately turned and left, going to find a motel for a few days. As soon as the door closed Dean followed your scent down the hall, stopping outside the door to your shared bedroom he took a deep breath.

Opening the door the first thing he noticed was the scent in the air, it was heavier in here, closing around him and instantly making his groin twitch with anticipation. Closing the door behind him he began walking forward towards the bed. Seeing you lying there wrapped in a blanket with sweat dripping from your forehead he took in a surprised breath. Your heats had never been this bad, of course you'd always been with him when they started so there was never a need for it to intensify.

Immediately kicking off his boots and socks he threw off his coat along with his shirt and pants. Dressed only in his boxers he lifted the edge of the blanket and crawled in beside your body, wincing at the heat radiating off you. The moment he reached forward to lay a hand on your stomach your eyes snapped open. His heart lifted at the relief washing through them.

"Dean," his name left your lips in almost a plead. Not wasting any time he moved to hover over you, running his hands along your already naked body. "Don't worry sweetheart, I've got you." He watched as a single tear fell from your eye, kissing your temple he began trailing soft kisses over your face and neck. As he felt your hands slowly come up to rest on his back he brought his lips up to meet yours eagerly.

The presence of your alpha immediately helped to calm your raging emotions. As he began trailing a hand down your side and lower you couldn't help the low moan that escaped your lips. The moment his hands felt your slick thighs a low growl sounded from deep in his chest, "Omega."

"Alpha, I need you." Meeting his eyes you were turned on even more if possible by the darkest green meeting your gaze, Deans eyes were glazed in lust and you knew yours mirrored the same. Slowly he began covering your neck and chest with wet kisses, nipping at the warm skin here and there. As he moved lower you began feeling a buildup in your lower abdomen, knowing what was to come.

Moving your leg to rest on his shoulder Dean ran his nose along the inside of your thigh, "My omega, all mine." Before you could reply he leaned down to place a soft kiss against your folds. Closing your eyes your hand moved to rest in his hair, as he began licking and sucking all the most sensitive spots you tugged hard, earning another growl.

When he began running his tongue over your c**t you let out a loud moan of his name, arching your back off the bed you couldn't help but think of how well he knew your body. Holding an arm over your hips to keep you still Dean ran his other hand up along your thigh. Reaching up he continued sucking just as he entered a finger into your slick entrance.

If not for his arm holding your down you were positive you would have come up off the bed. It only took a minute for the buildup he created to become too much. You felt yourself tipping over the edge suddenly, in your pleasure high you couldn't help but smile as Dean continued to lap at your folds. He made sure to prolong your orgasm, drinking up everything you gave him.

As you felt a new buildup begin you gently pulled at his hair, looking up Dean smiled, his chin covered in your juices. Crawling up after discarding his boxers he captured your lips in his. Reaching down between your bodies you wrapped a hand around his already hard member. Before you could try anything his hand on yours stopped you.

"No omega, right now is for you." Nodding you brought your hand back up to rest on the side of his neck and pull him back to your lips. As you continued to devour one another Dean moved forward, you felt the tip of his member tease your entrance, causing a whole new leak of your need. "Please alpha."

Not wasting another second Dean sunk into you, your body happily taking him all in. Staying still for a moment you both simply reveled in the way it felt, in the way you were connected. As you wiggled trying to create friction Dean took the hint and began moving, slowly at first but building up to a steady pace. Trying not to end to quickly Dean felt his knot beginning to swell.

Leaning down he took one of your n*****s into his warm mouth, his tongue running over the sensitive area as his other hand began kneading the other. The moans escaping you only seemed to encourage him. Beginning to once again feel the coil tighten in your stomach you squeezed his bicep, the muscle twitching under your touch.

"Dean I..."

"I know baby, go ahead." His words and one more thrust was all it took to send you into a second wave of incredible pleasure. Black dots clouded your vision and your legs shook. As your body tightened around him Dean let out a loud moan and came hard inside you, his knot locking you together. Taking a moment to catch your breath you both stared at one another, leaning down for a quick kiss Dean moved to lay on his side.

Lying together, connected in the most intimate of ways was always your favorite part of being mated. Being with your alpha and knowing how much he loved you, no feeling could ever top that. Dean pulled you close to his chest, nuzzling his neck and lying with your face resting where his neck met his shoulder you placed a small kiss to the warm skin.

Dean began rubbing patterns into the skin of your back, his rough hands creating a wonderful feeling against the softness. "Y/N, why didn't you tell me?"

Sighing you knew there was no way to ignore it, "You'd already been hunting the ghost for two weeks. I couldn't stand the thought of you coming home and then it taking another victim. I thought I could handle it, I never knew how different a heat cycle was once your mated if your alpha isn't there." Pulling your head back your eyes meet his soft green ones, "I'm sorry Dean."

Leaning forward to kiss your forehead he pulled you back into his chest, "I understand, just please tell me next time. I can't stand the thought of you suffering, not if I can do something about it. Besides, I tend to enjoy when your in heat." Feeling him chuckle you lightly slapped his chest, "Very funny."

You both became quiet, before long you were almost asleep when you once again felt Dean kiss your forehead, "And who knows, maybe one day we'll have a pup of our own." Obviously he thought you were asleep, not wanting to spoil it you simply smiled, the thought of a baby with your hair and Deans eyes giving you wonderful dreams.

Sooo thoughts???