Your on psyche meds. Psyche meds are heavy metals as I understand them. The things you are taking are detoxing heavy metals.
You are going to feel worse there is just no way around it.
I have done extensive research and SOME have had luck using SAM-E for their psyche med for Depression while attempting to detox and fix their guts.
I wouldn't dream of suggesting this to you, only that you do a LOT of research.
There was also a natural psyche med I came across called Lithium Orotate you can get on Amazon for a few bucks. Read the reviews and stories on that it was quite impressive. I have someone close to me who suffers but not all the time.
Also quercetin with bromeliad can help with histamines. Read reviews on that.
Not sure what probiotics you are taking but there are not all created equal. There are good ones and there are super-hero ones!
The pain in your guts is leading me toward parasites? Have you tried something like Parazyte and finishing the bottle?
H pylori is also a possibility with the pain you say is associated. It does not sound like gas pain to me.
I think you should immediately order Braggs apple Cider vinegar and begin drinking a tbsp in a large glass of water all day long. Make sure you are getting close to a gallon of water a day.
Even your good bacteria is going to need some carbs to eat. Potatoes? You can't grow a colony of anything without food. Some veggies have more carbs. Apples due to malic acid may also be a good colony growing food for you to try.