Legs cramps!

My left leg was cramp today. it was still 5:30 in the morning and i woke up with cramps. its really hurt i almost cry but i tried to control myself and relax. so i massage my leg to relieve the pain. it usually happen to me because i am pregnant. I experience this two times already. in the www.babycenter.com says that, thats why i am experiencing this because I'm carring exta weight and my expanding uterus is putting pressure on the veins that return blood from my legs to my heart as well as on the nerves leading from my trunk to my legs. Unfortunately, the cramps may get worse as my pregnancy progresses. Leg cramps are more common at night but can also happen during the day.