today i had sex with a girl.. we were both very aroused, ive eaten her out, making her cum. after that we go on having sex..we start by doing the reversmisionary, girl on top. so she can reach another orgasm.afterwards missionary,.not realy giving her orgasm but get very sensual..after a couple of minuuts, we finish with the standing position,which get her wild.. this position realy blows her mind.. but today it was difrent. when she camee, i layed her on the bed. She then started complaining about the pain inside of her.it had realy hurt her badly. she even had to pee right away.. i first thought maybe i have might hit her cervix. or maybe the i had pushed the bladder.. This kinda freaked me out..seeing her in pain like that.. Just after she orgasm. i lay her on the bed.and all of asudden , she almost in tears.. Now. what did i do wrong??what can I do to avoid this happening again??