Hip pain from side sleeping

Side sleeping has been really hurting my bottom hip. I have tried rolling over throughout the night to alleviate the pressure on each hip, but it does t seem to help. I end up rolling onto my back and waking up because that is so uncomfortable. Does anyone else have this problem? And what helps? I have tried the pillow between the knees thing, and it doesn't seem to help the bottom hip pressure problem. I would appreciate any suggestions!!