Leg and arm pain.

Tabby
Has anyone had pain in their legs or arms if you lay on one side and it hurts enough to where u gotta turn to the other side. I'll sleep on one side and all of a sudden it feels like my leg and arm are cramping up or I have a charlie horse and I gotta turn to the other side to make it stop. It's uncomfortable cause the only way I can sleep is to cuddle with my fiancé and I can't when I start hurting like that. What is it???