Cramping in Toes, Foot & Calves

I am still experiencing cramping in my feet and toes after two weeks. I was woken up this morning with cramping in my calves. Which is new. I am drinking lots of Gatorade, and taking a potassium supplement daily. I do not go anywhere out side of my home, with fear that I may have a cramp. I have noticed that when my feet get cold that is when the cramping begins. I am a 53 year old female,  that has low potassium levels, that is why I take a supplement and (I am also Hypoglycemic). As far as my potassium levels, they have dropped to 3.0 several times a year, and not once did I experience cramping in my feet, toes or calves. That is why I'm concerned at this time, why I am experiencing daily cramps and a heaviness in my legs?

If anyone has experienced the same problems and has an idea what the problem could be, I'd appreciate hearing from you.

Thank You!