- Avoid standing for long periods. If you must stand, make sure that you keep your feet moving to help increase circulation
- Get up slowly from either sitting or lying down (This is very important when you are getting out of the bath)
- Eat regularly. Avoid long periods between meals; it is better to snack throughout the day
- Avoid hot baths or showers
- Avoid lying on your back once you reach the middle of your second trimester
- Wear loose, comfortable clothing to avoid restricting circulation
Source : AmericanPregnancy.org
