Fear and Pelvic Pain

I've been having quite a bit of pelvic pain over the past 2 months. It started last cycle when I had really bad pain during ovulation. The pain stopped right after ovulation but then started again around cycle day 21 and didn't stop until after my period was over. This month it has continued right through my period and I'm scared.

I have an appointment with my OB/GYN in the morning. They'll do an ultrasound first and I'm just praying everything is OK.