Oh boy
Don't give up anon. Find a church you can trust and reach out for help. You'd be surprised how many people are out there who'd love to help you. I'll pray you find answers to what ails you. Have a fam member going through something similar and it's frustrating trying to figure out what's wrong. Look into fasting. It can do wonders to reset immune system.
IDK your symptoms but I got really sick like that and it was H-pylori. Took a while to diagnose and was hell on earth.