I Have Severe Swelling In My Legs And Feet. At

I have severe swelling in my legs and feet. At times I can not walk. I have hep c in stage 4 liver failure. My PCP says there is nothing wrong with me...maybe it's heat related. This has been going on since January. My PCP told me to wear support hose, which pushes all the fluids to me knees, then when I take off the hose everything swells to double. I saw a kidney md and my kidney function is normal. So all the md's say that there is nothing wrong with me.