I get it especially when I'm sleeping or in the middle of the night. Feels like Charlie horses to me. It's horrible, they say to drink more water..
Drinking water, milk, and eating bananas helps. The cramping is from the baby you just need potassium.
Heck yeah. When you get one or feel it coming, flatten your foot. Against a bed, wall, the floor, or in the air. Make it flat like you're standing on it and it should stop the cramp.