Problem

Had a tkr in November of last yr.have had issues since then in January I started experiencing poor circulation in my left foot same leg that was operated on.get in with primary dr and she gets things going with different tests. Went for a check up with knee dr and he said “ oh you need to see a specialist bout your foot and release me from his care” now the specialist I am seeing has said I have DRY GANGRENE “ in my left foot big toe a blood clot went to my big toe so now I am dealing with this issue I just have to wait for the dead tissue to fall off!?!?!? Anyone else dealt with this issue