Pain off birth control

I recently got off of the pill (levora) and about two weeks after my period I have started having a sore uterus. It hurts constantly. And every now and then it'll cramp up with sharp pains (not in my ovaries!) this has been happening for five days. I went to the doctor and said they didn't see anything wrong. I was just curios if anyone else had a similar experience will being off birth control and if so how long did it last??