severe cramping in lower legs

Savannah

I'm 29 weeks pregnant today

It has only been two days that I've had these cramps in my leg but they wake me up at night, when the cramps die down, if I do normal things like going for a walk or some home work it feels like stiff muscles in my calves, the cramping becomes so severe I can barely walk at times.

I have a doctor's appointment on Monday and was thinking I could wait it out until then.

Does anyone have ANY ADVICE?