Your baby size is about 11 ounces in weight and seven inches in length. Your baby have freedom of movement, there's plenty of space for twisting, turning and even an occasional somersault. Your fetus now sleeps as much as 12 to 14 hours per day! Now that you 21 weeks pregnant, your baby swallows a bit of amniotic fluid each day for nutrition and hydration.
Diet and exercise go hand in hand so keep in mind not to even miss one day of some sort of exercise in order for your pregnancy to be fruitful.