I am far from being a doctor but can only tell you of my experience with a DVT. Last year, my right foot was swollen and eventually became a DVT diagnosed by ultrasound, and put on a blood thiner. My care was under a vascular surgeon as well as my PCP. My care lasted 3 months before I stopped the blood thinner medication.

This area of the forum is for kidney issues, and there may be an issue with your kidneys as well. I honestly would refer you to a vascular surgeon or cardiologist first for your swelling issues. If you believe your kidneys are also impared, I would talk with your kidney NP or nephrologist where either can measure for kidney function. If waiting is a concern, go to your PCP so he/she can order a blood test to measure kidney function and check your creatinine levels.