In Melps absence, and being an avid reader of People's Friend, I feel I can (in some small capacity) aid your dilemma.
Cramp has multiple causes and it is essential you isolate the cause before treating the symptoms. Excessive exercise can cause painful cramps, so you should lay off the pole dancing for a short period and see if this alleviates your distressing condition. Leg muscles being deprived of oxygen can also cause cramps, so it might be an idea to try sleeping with your leg dangling out of an open window. You may wear a thermal popsock if you feel that inclement weather could cause frostbite to your extremities. Lying too long in one position may also be the cause so perhaps you should train yourself to embark on a short aerobics routine every 39 minutes throughout the night. Try not to jiggle up and down too much if your pelvic floor is slack.
If you try the above remedies to no avail, I'm convinced that amputation will cure you of all your worries. I believe Melp can do this for a moderate fee.