Ovary pain during sex....

My fiance an me have been together for 2 years. Due to the fact that he is well endowed, i am used to being sore after sex, but recently sex has become painful. It only hurts on the left side of my vaginal wall right along my ovary. Most of the time i can push through the pain, and it begins to feel better. I lost our first child in March, then immediately got on the depo shot. In June i got off of depo because we are considering pregnancy again. My periods are finally starting to become regular again after pregnancy and depo. The last one i had though was very painful (more than normal, and now the pain in my ovary is sharper when we have sex. I know neither of us have any stds because we have both been checked, so that's not the issue at least.... Anyone have any similar situations, or advice?