high waist empire wedding collections with sleeves

Just looking for advice.. I'm 35 weeks pregnant. I was wondering what would help the sciatica leg pain in the inner thigh and really bad leg cramps.. The leg cramps sometimes are in my ankles too and I feel like I have to stretch my legs constantly or move my ankle around to try to stop the pain but nothing helps. I can't sit for a long period of time or it'll start up. I also can't sleep at night when they act up either. I have them all the time and it's really painful. Please help! Thank you! high waist empire wedding collections with sleeves