This sounds like Scarletina a strep infection. Only antibiotics can take care of it, unfortunately. - If you have severe pain with a localized rash (only in one area) it could be shingles caused by the chicken pox virus. - A bath with baking soda could help some.
There are hospital that can not deny you service if it gets too bad. We have fund raisers for ours (St Francis) to help those that are in positions such as yourself. Someday you can pay it forward when you are able.