Leg cramps are miserable. Just another brilliant aspect of pregnancy. It helps me if I stretch before I go to sleep and I try to take in a lot of potassium. If all that fails, I have to wake John up to massage the cramp out because it just won't stop and then my leg is sore for days. I'm also taking an extra magnesium supplement. The doctor told me to take it to help prevent my migraines, but it seems to do double duty and helps prevent leg cramps as well. Maybe you should try it.