You woke up that fateful morning and knew almost as soon as you rolled out of bed that it was coming. Your heat. It was already unbearably hot as you pulled on a spaghetti strap tank top and the shortest shorts that you had and you drug yourself over to the monitor on the wall and looked at it only to groan. It was set at 68 degrees and yet still you felt like you were standing outside underneath the scorching hot sun. "FRIDAY?" You groaned as you sank down into a sitting position with your forehead resting on against the cool wall. "Yes, Miss (Y/N)?" The AI asked. "I need...you...to tell Stark...it's starting." You whimpered as the first of many pains shot through your lower abdomen causing you to double over gasping. "Right away, Miss (Y/L/N)." FRIDAY said urgently.

You silently thanked Tony for putting her in all the rooms including the bedrooms and bathrooms as you crawled back over to your bed. Halfway there, a hot feeling bloomed between your thighs and you moaned wantonly and almost stopped as you felt slick start to drip from between your folds but you managed to finally reach your bed and crawl up onto it. Ten minutes later, Nat, Tony, Bruce and someone new came walking through your door as you cried curled up in a ball in the middle of your bed. "Holy shit on a stick, yea she's damn sure in heat!" Tony said as he stopped dead almost knocked off his feet by the delicious scent that was wafting his way from the bed.

"Tony!" Nat growled as she shoved him towards the door and Bruce opened the bag that he had slung over his shoulder and began taking out all sorts of vials and syringes in order to help calm the raging heat that was just below your skin. You vaguely registered Banner rummaging about and getting things set up and Natasha and Tony bickering as per usual but you couldn't help but stare at the tall, blonde haired, blue eyes obvious Alpha standing with his arms crossed and his jaw set so hard you were surprised that he wasn't cracking teeth at this point.

As the other three continued going about things as normal, it took everything in you not to jump off the bed and rip this new man's clothes off and have him knot you then and there but thankfully Banner turned with three syringes and walked over to the bed and sat down beside you and began explaining what the syringes were for. Taking your eyes off the handsome man you looked at Bruce as he began to talk. "Ok, (Y/N). This first shot is going to reduce your body temperature. You'll be able to relax for a few hours until it wears off." He said as he swabbed your hip with an alcohol pad and then gave you the first shot which made you hiss as it stung.

"How long will that be?" You asked as the stinging finally faded. "Well...we don't know. It's different for each omega you see. Sometimes the shot can last all day other times it'll last for about two hours. It's literally a guessing game at first and then once we figure out how your body reacts to the dosage I just gave you then we can either up it or leave it the same." He said. You nodded that you understood and he had you sit up so he could give you the other two shots in your arms. "This second shot is to well uh...help with the uh...."He stammered unable to find the right combination of words that he could string together that wouldn't leave him embarrassed as all hell.

"I believe what Banner is trying to say is that this second shot should slow down the production of that divine smelling slick between those beautiful legs of yours." The tall handsome blond man said. It was as though the fire that had just started to ease up beneath your skin blazed back to life just at the sound of this man's voice as he uncrossed his arms and began stalking towards you where you sat whimpering and now once again covered in sweat on the edge of your bed.

"You've got to be shitting me!" Banner exclaimed causing everyone to stop and look at him. "What's...wrong?" You moaned as another flash of heat tore through you and you felt yourself gush slick into your panties as the blond Alpha took another step towards you. "She just burnt through that entire dosage! Cap, you're going to have to leave." Banner said as he looked up at the blonde man. You bit your lip to keep your protests in your throat but you could tell that the man that you now knew was Captain Steve Rogers didn't want to leave anymore than you wanted him to.

"Steve, let's go. She's getting to me too and I doubt we'd do anyone any good if we ended up fist fighting over her." Tony snarked as he walked over to Steve who by this point was shaking ever so slightly. You looked up at Steve who's eyes were almost midnight blue they were so dark and nodded apologetically to him. Steve huffed and shrugged Tony's hand off as he strode to the door. "I'll come back and introduce myself properly later." He said turning back towards you as he reached the door causing Tony to almost walk into him.

Steve yanked open the door and stormed out it leaving a very nervous looking Natasha and Banner in the room with you. "Sweetie, I hate to do this since I know you hate being in hospitals but I'm going to have to at least monitor you for one night to see how you managed to burn through that dosage so quickly." Banner said as he gave you another dosage to calm your heat then began packing up quickly so that Natasha could help you get changed. "I...understand...no hard...feelings." You gasped and smiled at Banner once he got his things packed.

He smiled and patted your arm as he walked towards the door and then turned back and told Natasha, "As soon as you get her dressed, bring her to the lab." Natasha nodded and Bruce left shutting the door. Natasha immediately walked over and yanked your closet open and grabbed some of the most unlikely clothes to dress you in. "Really...Nat? A sweater...and jeans?" You gasped as she yanked you arms up and forced the sweater over your head and arms. "Look, you don't know Steve as well as I do and let me tell you something now. I've NEVER seen him act like that around an Omega in heat. Usually, he'd excuse himself or he wouldn't even come at all but when he said he would come back and introduce himself properly? He damn well meant it. I just hope I'm not around when he finds out we're holding you overnight." She said as she helped you into your jeans.

As she slung an arm around your shoulder to help you to the door something told you that Cap was going to pitch a fit when he couldn't find you in my room. And several hours later, you and Natasha both were proven right.