Blood during sex

Hi everyone,

Im 20 years old and I guess you can say I’m one of those people who’s vaginas are overly sensitive. The other night my boyfriend and I were having sex multiple times and when we were done I noticed that I was bleeding. Should I be concerned ?

Another problem I have if anyone goes through the same thing; the first time we were about to get ready to have sex while we were doing it I had a burning sensation down there and afterwards it still burned..

Can anyone please help, thank you!