Two days in a row

Jennifer
For two days in a row now i have been awakend by the worst Charlie horses in my calves!! Lordy I am limping around my house because the one I had in my right leg has caused me to be so sore, it hurts so bad! Is there something I can do to prevent these suckers. I wish I could eat bananas but they make me puke!! Yuck! I am 35 weeks