I'm 24 and virgin. At the beginning my periods were painless, but around 2 years ago I started having cramps. My last two periods were normal, in general, but I started to have severe cramps and back pain to the point I couldn't even move. My last period ended a week ago and all of a sudden I started to have the same horrible back pain and cramps, I struggle to go to the bathroom, to lay in bed, to sit on the couch, chair... I'm quite nervous, my OB/GYN works with appointments and I still have to make that call. I'm even thinking this is something that might end in infertility. Please help!