Go ahead and get seen by an MD.
Too much salt and too much time on your feet will cause this in anyone, but you could have (I agree kidney and liver) very likely some type of heart disease which can be treated. Go ahead and make an appt.
Three things come to mind when a patient has swelling -- heart disease, kidney disease, and liver disease. An echocardiogram (or ultrasound of the heart) would be a good test to start with to assess if the heart might be at fault. The liver doesn't usually cause swelling unless there is cirrhosis, which results from long-standing liver disease (such a hepatitis, alcohol, etc). An ultrasound of the liver can usually detect changes suggestive of cirrhosis. Losing protein in the urine can result in swelling. This can be checked with a simple urine study. You should see your doctor to have a workup.
might be fluid retention and too much salt please consult your Doctor.
could be pms, or too many carbs it sounds like water retension