hi sounds like you had cramp in your calf muscle during the night and being that bad its a wonder it did not wake you up. so what can you do try some gentle massage or a warm soak in the bath to help ease it and rest. but i do know what you have i used to get these a lot at one time when i got this happening i would pull my foot back up with my other foot and found that was a good way to ease it. cramping is also a sign the your salt intake is a bit low. hope something here helps you. good luck
i'm 15 years old. when i woke up for school i had the worst charley horse in my calf. my leg is still sore. what do i do. i haven't done much exercising i weigh 112lbs. i did wear heels for a few hours on sunday and that friday.