I Know To Myself That Im Still Virgin But I'm

I know to myself that im still virgin but I'm getting confused with what happen me and my partner decided to have sex, at first it really hurts we even tried it several times until we did it and my partner notice that I didn't bleed he even thought that I'm no longer virgin.. Swear to God I never tried having sex befire !! What happen? Need help clarifications I'm so stressed..