Tuna off my list
Food allergies can appear at any time, esp with foods such as tuna, eggs, and shell fish.
I developed gas issues after eating eggs several months ago. I am very aware of "trigger" foods and avoid them at all cost..thats one reason I don't drink whey protein shakes...or drink milk. Anyway after almost a year of eating 4 egg omletes with cheese for breakfast, and having "egg salad" sometimes for lunch, I started to get terrible gas after eating the eggs. Long story short, I can't eat eggs anymore .
You might want to try tuna at a later time and see if you get a better reaction..sometimes our bodies go wacky post op...one week things are "great" with certain foods, the next not so great, the following week..great again.
Scott