YTCrockpot, wondering if, after a month of vegetarian / vegan diet, then the sudden four days of chicken was too fast, too much, for your system to re-adjust at once? Maybe try something easier to digest, such as fish in small amounts, slowly, every few days? Try fresh fish from the supermarket, not the breaded frozen kind, which can be yummy, but far too processed, mostly breading, and not really fish anymore, especially for your system right now. You could try making a smoothie using your tofu.