Do Provera And Ovidrel Have Any Side Effects?

Hi, i have pcos, and have non stop bleeding from the past 2 months, i went to the doctor yesterday and he did a sonogram and everything looks ok, except the pcos is still there. He recommended i take provera to stop periods and then in order for me to concieve he recommended i take ovidrel. I wanted to know if all these medication is safe and does it have any side effects. Please help.