Question: what to do when your legs are swollen during pregnancy?
Answer: Reduce sodium intake. One way to reduce swelling during pregnancy is to limit your sodium (or salt) intake. ... 
Increase potassium intake. ... 
Reduce caffeine intake. ... 
Drink more water. ... 
Elevate your feet and rest. ... 
Wear loose, comfortable clothing. ... 
Stay cool. ... 
Wear waist-high compression stockings.