1beachlover, sorry I hadn't read your post when i posted my previous comment but I see u also get it when exercising. Putting pressure on my behind seems to relieve the pain a little but kind of hard...
I only get the spasms after exercising, never during the night. The come on slow, peak at an excruciating level where I feel dizzy and nauseous (sitting on the toilet does seem to help) then it...