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"JARVIS! Get someone up here, now please!" Natasha screamed from the communal bathroom on the seventy-fifth floor of Avengers tower.

"Yes, Miss Romanoff" the AI said. "Is there a preference of who you would like me to call up?".

"Get Clint!"

"Master Barton is not in the building right now. Master Banner, Master Rogers, Master Stark, and Master Odinson are all available" JARVIS informed her, sounding as sorry as an AI could.

"Whoever's the closest! And, please, hurry!" the red-headed assassin wailed.

"Yes, Miss Romanoff. That would be Master Rogers. He is currently running up the stairs at 61.3 miles per hour".

'Dang it' Natasha thought. 'He'll have to do, but I don't think he even knows what a tampon is, let alone what it looks like'.

"Natasha? You okay in there?" Steve asked.

"Oh, Steve, thank god. I forgot my tampon in my room. They're in a pink box, with the word Playtex in blue letter, and a green, running woman's silhouette. Please, can you get one for me?" Natasha practically begged the super soldier.

She couldn't see his face, but she imagined it was redder than normal. She was right, it honestly looked like a tomato.

"Um, yeah, I guess. JARVIS, make sure I grab the right thing, please" he said.

"And, please hurry!" Natasha added, as he ran off.

Luckily (for everyone), Steve found the small patterned package quickly, before running back upstairs. Tony and Bruce looked at him funny at first, but when they saw what he was holding, they're eyes went wide and they nodded at him in understanding.

Natasha nearly cried with relief when Steve slipped the tampon under the crack under the door. She grabbed it gratefully.

"Thanks so much, Steve! You too, JARVIS! I don't know what I would have done without you two!" The PMS-ing assassin cried.

"Any time, Tasha" was the star spangled man with a plan's reply. "It was my pleasure, Miss Romanoff" the British AI said pleasantly.

Natasha left the bathroom a couple minutes later. She texted Pepper, who was also on her period, to meet her at in the house theatre.

Then she set the kettle on and grabbed Clint's emergency 'Oh God damn it, both of the ladies in this tower are on their periods at the same time' box. It held dark chocolate, instant coffee that didn't taste like crap, Advil (Natasha's choice pain killer), Tylenol (Pepper preferred pain killer), spare underwear, mint tea bags, heat pads, hot water bottles, mint Mentos, tampons, pads, the Netflix password, and the phone numbers for pizza, sushi, Chinese food, and shawarma (that last one was Tony's idea).

"What do you want to watch this time?" Pepper asked, sitting down and breaking of a piece of chocolate. "I'm kinda in the mood for a rom-com".

"Yeah, me too. How about 'Blue is the Warmest Colour'? Or maybe 'Punch Drunk Love'? It sounds good. Rated 4.4 stars" Natasha replied. Pepper agreed to 'Blue is the Warmest Colour'. They literally could not stop laughing the entire time.

That's how Clint and Tony found them, asleep, two hours later. Clint turned to Tony.

"Leave them here, carry them to their rooms, or wake them up?".

"Carry them to their rooms. NEVER WAKE UP A GIRL OR WOMAN ON HER PERIOD, birdbrain" the billionaire playboy said, as if Clint was crazy.

"Good point" he said.

They carried their wife/girlfriend to their rooms. They didn't know it, but the small gesture meant more to the two women than anything else.