Am I out?

AF isn't due for 5 days, but I've been feeling sharp pinching pains toward my left ovaries for about a week. And today it was really bad. Probably 30 times and lasts for about 5 seconds each time. . I have an ultrasound scheduled for next Monday, in a week from today. Im wondering about a cyst or maybe tubal? What have your experiences been? I'm starting to get my hopes down for conceiving this month. Do you think this is a good idea?