For the last month I have been getting a muscle cramp (charley horse) in my right calf almost every night. I also get cramps in the bottom of my right foot and in my shoulders (if I move the wrong way). I have been diagnosed with Fibromyalgia and Lupus (the Lupus is said to be inactive at the time). I go to school full time and work full time as a bartender and server. I recently went to the doctor and he is testing my potassium, but he is sure that it is not and just gave me the medication Mirapex, which is for restless leg syndrome and other issues. I feel like my doctor isn’t taking this serious and these cramps are severely painful. Does anyone know what could be causing all of this?