- Avoid standing for long periods of time
- Walk as much as possible to help the blood return to your heart
- Always prop your feet up on a stool when sitting
- Avoid sitting for long periods of time
- Wear support stockings
- Get enough vitamin C (this helps keeps your veins healthy and elastic)
- Sit with your legs higher than your head for at least half an hour a day.
- Avoid excessive weight gain
Source : AmericanPregnancy.org