Seems like a pretty strange place to get h. It sounds more like a different kind of infection, bacterial perhaps. Go to a dr if you can, perhaps a dermatologist. I had an infection under my arm once that got so bad it knowcked me out, fever and all, and took a long time to clear up. If you can't go to a dr, or don't like going, see if you can find some comfrey root at an herb or health food store. Put a little on a plate, mix with a little warm water until it seems gelatinous; spread on a sterile 4x4, and tape it (with 1st aid tape) to your underarm. I also slept with a heating pad on low curled up under my arm. Good luck.