Edema ~ 3 mo affects all areas of body. Pain in legs/feet prevent sleep. Upper abdomen distended & tenderPCP unconcerned says drink more water?

Depends... Not knowing your Medical Hx, Medications........Anemia, k idney, liver failure, CHF, Hypothyriodism can be responsible. So also medication side effect. Normal daily need of fluid is around 1200cc per day. If you are retaining fluid...you should limit fluid. A diuretic like Lasix (furosemide) will help. It all depends on your overall health condition.