another iui question

I had my first <a href="">iui</a> today. On the way to our RE( 2 hour drive) I started to feel some slight ovary pain. I was hoping it was ovulation pain. But on the way back the ovary pain was so much worse! Sharp pain. I was kinda of worried that something was wrong at first. Its has subsided somewhat since we have been home. Is it possible that our timing was that on or is this a normal side effect?