Why can’t I handle meat anymore?

Around September of last year, I got very sick. I couldn’t eat anything and I was throwing up 10 times a day at least. Even if I didn’t eat (which was a lot. I maybe had a few bites of cheese and turkey in a months time), I would still throw up and dry heave. I got that issue figured out. After a week of testing at the hospital, they figured out that I had a VERY severe case of thiamine deficiency and I was incredibly malnourished and dehydrated from not eating or drinking ANYTHING for a month. They also discovered gallstones. They took my gallbladder out, gave me vitamins, and sent me on my way. It’s been about 5 months now and I’m immensely better. However, I CANNOT eat any meat at all. Even the smallest bites will make me vomit every damn time. It’s every meat. Not just greasy or fatty ones. ANY meat. It’s really sad and it makes it hard to get my protein in. Anyone have any advice? Is there a way to fix this? Any clue why it’s happening? Feel free to ask me questions as well.