Michele, You are right. Antibiotics can be a main culprit of yeast overgrowth. The antibiotics kill all bacteria, good and bad, so your gut is left with nothing protecting it. Also, steroids can cause a fungal overgrowth as well as birth control pills. Sometimes it takes months, even years to manifest itself with symtpoms. The diflucan, or nystatin prescription drugs are useful. They are antifungal drugs. If you want to try something natural, I suggest olive leaf extract, capryllic acid, or oil of oregano. A health food store would probably tell you the best choice. I take capryllic acid or olive leaf, myself. As well, if you really want to get rid of it, you should eliminate sugar and grains for awhile because they just feed the yeast. Sorry you are not well. It is a tough go, but hopefully your doctor will be able to help you with a prescription. Be prepared though, as you wipe out the yeast overgrowth, you could experience flu-like symptoms for a couple of days, known as a Herxheimer Response. Best to you... Kim