Pregnancy Problems - Leg Cramps

People say that pregnant women are more prone to leg cramps. I think it’s quite true coz I am one of the victims. Last night, I had another attack of leg cramp, my second attack in 1 month. When the cramp attacked, the muscles on my leg (it always happens to my left leg) hardened and I could not move my leg. Leg cramps are terribly painful and each time I have an attack, I would be screaming in pain… in the middle of the night. Thankfully dear hubby would always be by my side to massage my leg to release the tensed muscles. I wonder if my body is lacking in certain nutrients.