For bum itch, I mixed up **pure** essential oils of things like patcholy and lavender in olive oil (very little olive oil -- you think it might burn, but it's soothing relief).
I'm a big ban of the home enema to get everything out. You want the toxins out, so if it was me, I'd do it.
Sorry you're going through such misery. There obviously was a lot of stuff for your body to deal with.
Drink lots of pure water.
Also, I like that packaged tomato soup by Imagine that you find in the health food store. Soothes the throat.