~~cramping on gonal f~~~help!!!!!?

i am 10 days past my cycle, and feeling cramps in my right ovary. It is too soon to ovulate, and i am on gonal f this month. I felt cramps after the 3rd injection yesterday night and today i still feel cramping. I know i am not over stimulated bc i just had an ultrasound check yesterday and dr said everything looked fine. i have 2 possibly 3 good follicles (sizes 10,14,16) before time to ovulate (about another wk)? anyone experience cramping while on gonal f? whats going on?