Over the last week I have been experiencing deep yellow urine. I suspect I was not drinking enough so I drank more and it improved, but now it is deep yellow again. Now my feet are swelling somewhat, which has occasionally happened in the past but not commonly. It also seems that my belly appears a little larger than it was. We are at a beach house this week and I m not sleeping well -- I awaken with a cough that goes away after a while and I ve been sneezing inexplicably a lot. (Allergies dont normally give me much trouble.) Some measure of fatigue has also set in. I did bike 10 miles yesterday (more strenuous than is typical for me) and did not feel any poor symptoms as a result. Do you have any thoughts on this? Any possibility of congestive heart issues? Thank you for your help.