So I’m not a virgin, and I haven’t bled before but, I was having sex with my boyfriend (our first time) and I’d definitely say he’s bigger than my previous sexual partners, during our sex I felt like he was hitting something inside of me, (I just thought this was because he’s so big) and then we realised  I was bleeding, it wasn’t painful or anything I’m just confused and very concerned, I have friends that this has happened to I’m just confused and would like some reassurance? What could of happened?