Nearly 2 months ago I had melanoma surgery and the removal/testing of 2 groin glands. Have an infection that lingers and a 3 inch red, swollen gland surgery site. Have used ice faithfully. Would hot paks give better results? (Am finishing a 10-day course of penicillin... an iffy treatment deal because of multiple chemical sensitive to most big drugs. In the past , several pen... Rxs have been refilled with the same nothing effect on infections. Sulfa has been substituted afterwards, but the last 3-day Sulfa drug resulted in infection healing but also the development of a rash. Thanks for your wisdom.