Hello, I would be happy to help you with your question.
The cramps might very well be related to the medications used during IVF cycles or related to the enlargement of your ovaries related to the medications used to produce follicles. Your symptoms are not specific, but should be addressed with your IVF doctor. There may be an indication for an ultrasound
to look at your ovaries. Also, you should be checked for a bladder infection.
I hope that this helps. Good luck!