Generally 15-20% pregnant women are affected by varicose veins. 80% pregnant women suffer from leg edema.  And few suffer from cramps on calf muscles. First thing you require is enough resting. You should intake calcium and potassium rich food. Some tips to overcome this problem are; wear light fit clothes, don’t put pillow at foot to prevent stretching the foot forward from ankle while lying on back as it may trigger cramp, don’t wear high heeled shoes. When attack occurs you can follow a massage and stretching of the affected muscles.