I had this problem before when I would put tuna in my salad... so I stopped that. And today I had tuna and crackers... and again my tummy hurts... but it doesnt seem to bug me if I have it on a sandwitch
I started to get the same feeling. I get a pretty bad stomachache with shrimp. I was a shrimp fiend and then one day I ate it, got a bad tummy ache that night. Ate it again, same thing so figured it wasn't the rest of the food, just shrimp. I get a tummy rumble or two with tuna but I just eat it anyway because I love me some tuna.
Yesterday the tummy ache wasn't too bad - just a little weird, kinda like bad gas and I drank a diet coke and it was fine. For some reason pop helps to settle my tummy.
But the last time this happened - few months ago, it was horrible, I felt like I was going to be so sick..... Its almost like tuna doesnt go well in my empty tummy (like when I have it mostly alone) - but it is fine with some bread on a sandwitch....
If this started happening with shrimp... I WOULD DIE!