 [ Symptoms ] mystery illness what could i possibly have a fib chronic diarrhea vomiting and nausea i have been severely ill for almost a month now i thought i got food poisoning possible source subway avocado that looked an unusual shade of green about 1 month ago  have had chronic diarrhea 4 6x a day ever since it has gotten progressively worse and now within the past few days i have been vomiting after most meals i have been emitted to the er 2x for fluids one of those trips resulted in my heart going into a fib no history of heart problems in the past treated with cardioversion [ Disease ] hi of course your heart will start to play up having this problem for so long doctors been there yet or doctor to you even did you not bring up your problem why you was at the er here is a link its from the uk is nhs on food poisoning it has lots of help but as this has been long term i would have thought the er would be the best place for you seeing as its given you so much trouble <link> just google this link to open and read good luck