Earlier in the infection I would have said hot water soaks with salt (like from coffee pots at gas stations), lots of garlic and wrapping it up, but I think it's progressed beyond that point.
In 2015 I waited too long on a staph infection and it began to necrotize, I was in the hospital 2+ weeks and they told me if I had waited another day they would have taken my leg. Heed my warning, do not wait to long. Go to the doc, get antibiotics, take the whole script and keep on keepin on.