Question for the vampires

My right leg gets these terrible cramps at night. I will wake up screaming, literally SCREAMING from the pain. I'm searching the internet and do have a doctor's appointment on Friday (hooray) but if any of the vampires reading this could tell me if they know anything, I'd love it. Of course, as vampires you are dead and your blood doesn't circulate so you can't get cramps... or you may live in a state of constant cramps. IDK.  Okay, good night vampires.