Pain during sex

I had sex for the first time last night and it was p a i n f u l (at least I kind of had sex because neither my bf or me came or anything since we were so worried about why it hurt me so bad).

My boyfriend and I used lubricant, different positions, different rhythms but nothing helped, and this morning my vaginal entrance still hurts a bit and I was bleeding slightly.

I'm not sure if it's normal for first time sex to be like that, and yes I was pretty nervous so that might be a factor too, so I'm pretty sure I'll have to check with a gynecologist if this persists but I just wanted to know if anyone went through anything similar...