Is this normal?

Okay so this may be sooo TMI but oh well. Okay so I lost my virginity a week and a half ago to my boyfriend. Since then we’ll be having sex and when he pulls out from certain positions alot of air comes out of my vagina, kinda like I’m queefing or farting I’m not sure but I’m pretty sure it’s just from air being pushed up there. It’s kinda embarrassing but he says he doesn’t care. Is this normal? Does it happen to other ppl? Is there something I can do to prevent it?