I suggest that you see a nephrologist as soon as possible. The cause of your condition might be proteinuria which is a kidney condition where proteins are filtered out of your blood causing edema (swelling) and dehydration. Your descript
ion of symtpoms does not exactly match it but it sounds like some sort of a kidney condition.
Proteinuria is usually an easily treatable condition but could be serious and not ignored. An ace inhibitor like lisinopril is usually prescribed.
Bill