they wouldn't notice at first— because you didn't tell them while the mission was happening. Tony noticed first, after the mission. "Kid, whats that?." He'd ask so ever casually, not annoyed, not disappointed, mostly concerned etched on his face, as the others look up and look at your wound Bruce would check your wound, only to see it was very bad, and could've ended as a fatal hit. Natasha would stay with you in the lab while Bruce fixes up your wound. they'd insist you get some rest, but ofcourse, you being your stubborn self you refuse. But in the end, you end up getting rest anyways because you've grown tired of being stubborn. if it was a bad hit, Tony would immediately set up an appointment to the hospital to get you checked up, he'd act like he doesn't care but he's worried about you. they wouldn't let you on missions after that, not after till your wound heals. Even if you insist that your 'fine' even when your not, they still won't let you on missions. they'd try their best to stay around you to make sure your safe, when your wound hurts, Clint would make you drink some pain relievers. If it doesn't work he'll just make sure your comfy and hold your hand on days when it your wounds get really bad, Tony will stay with you on your bed and do things that'll make you laugh, after that. he'd put some safety things on your suit, apparently because he 'doesn't' care and just don't want it to happen again— (he cares) they'll try their best now to keep you safe after, they won't let that happen, not again once your wounds start to heal, they'll finally start to let you on missions again. But they make sure to keep a close eye on you.