Hello everyone. I am suffering from mild occasional swelling around my waist, legs and feet and hands as well. I have had the dreaded blood test and of course, nothing showed up. I decided I was dehydrated and began drinking massive amounts of water. The swelling eventually went away. Well it's back now. I do drink coke and coffee and am wondering what in the world is causing my swelling! My doctors say nothing is wrong with me! This is very frustrating and actually painful. Can anyone help? By the way. I am actually underweight. So the weight is not an issue. I had a kidney and bladder MRI and scan and it showed nothing. I also have occasional discharges from my vaginal area but again tests show absolutely nothing. Today I have a mild tire around my waist and am miserable. Can dehydration cause these symptoms??