Also, look and see if the swelling goes away during the night. If it doesn't go away you should contact your physician and inform him or her of your symptoms. It could be a condition called preeclampsia, which is high blood pressure in pregnant women. This could be dangerous if left untreated. It also caused by the pressure on the nerves in the leg.
Most women complain of waking up in the middle of the night due to leg cramps.
Here are some ways you can prevent them. One way to prevent leg cramps is to make sure you have enough calcium in your diet. Lack of calcium can cause cramping because it is required for the muscles in your legs to relax. Try drinking a glass of milk before bed or a calcium supplement. Drink plenty of water.