Helppppp?!

I've been sexually active for about 3 years now, and I'm currently with a new partner, who is also my boyfriend of 6 months. we recently began having sex, but I bleed after and i don't know why??!!! I wasn't a virgin before we slept together and it's never happened to me before. Had this happened to anyone before? Is it normal or not?? Should I get it checked?? Help/advise would be appreciated. Thanks ladies x