I'm not pregnant, and have never been but i experience those severe cramps as well

My DP doesn't understand either, whenever i have an attack (thats what i call it) he constantly asks what is wrong... well if i am clutching my leg and screaming in pain then i have a cramp!! duh!!! I get them at night as well so i make sure i have a big glass of water before bed and i haven't had one in about 6 months now