Advice...?

Okay, so me and my boyfriend has sex twice on  Saturday and twice on Sunday. Saturday was the first time I've ever had sex and it didn't hurt that bad. Yesterday, we were having sex and he lasted a lot longer than before and he said I was really tight and it was hurting him. It started to hurt me towards the end and I started bleeding a little bit. Now he's being weird and distant. Is this normal? Did I do something wrong? Sorry if any of this was TMI.