I had a bad blister on the bottom of my big toe , it has been several months and still has not healed, I have been putting peroxide on it, soaking it in Epson Salts, keeping a band aid and neosporin on it when in shoes. The whole toe is swollen and changing colors from red, purple and now some areas yellow. I thought it was getting better but am worried now. Anything I can be doing to make it better?