Hi, I totally relate to you. I have never been able eat what I want. I have to refuse many dinner invites because eating out is a problem because I don't know who or what is used to make the food. I feel bad that my family and friends have to compromise with me and also in the time frame after food; my bathroom time. 
It's a challenge. I did mention before the FODMAP diet look it up. It is very helpful. Also, keep track of what u eat and write down the symptoms to know what is good or bad. Peanut butter is a good protein if u can tolerate. Vitamin supplements. I stay away from most fruits and vegetables unless I combined with a carb or something else I can digest well. How can we not feel paranoid; the pain is so intense. One day at a time. Hope the best for you.
