Water Retention

I had a doc's appointment yesterday for my prenatal care and the doc's asst. and she told me I need to drink more water. I think she's right since I haven't drank enough water lately but during pregnancy it is common that pregnant women experience swelling of the skin and now I am 23 weeks and next week Monday I'll be 24 mos. and that is 6 mos. and that is why I am starting retaining fluids in my body but I will try to drink more water at least 8 glasses a day to help up wash out more fluid in my body. I try also avoiding salty foods or not to eat too much of it, because it can cause edema or puffiness/swelling of my skin as what I have read information online.