Nightshades. Tomatoes are a nightshade. Those are potatoes, tomatoes, eggplants, sweet and hot peppers (and spices derived from peppers). Are those tomato sauces you used made from scratch or purchased? If purchased, what were the ingredients?
I don't see dairy on your list, but do you eat dairy?
You could also try eliminating nuts and eggs at some point. Those can be common irritations for people with autoimmune conditions.