Hello, Amy, welcome to the forum.
It is very uncomfortable and seems to get a lot worse when a have a fruit or a little bit of sugar.
That’s because the fruit and sugar are food for Candida which allowed the infestation or population to grow, making the symptoms worse.
Following our protocol, which is posted along with the other links in my signature section below, will start the healing process from inside your body. Since the rash concerns the skin, I would try to obtain an prescription antifungal by the name of Nystatin. This works well as a topical application for the rash.
You might also check out the index link below and see if there are other subjects of interest to you.
Let us know if you have questions.