You never know . . . the worst thing is to stress over the unknown, I had acid reflux issues going on, which on the whole is far from organ failure . . . so you just never know, could be something minor, but without a diagnosis it's anyone's guess, it's a complex area of the body with many things going on.
For me it was within the first year things eased, but then I had low blood sugar issues that cropped upwell into year 2, staying close to my Dr was important through it all!!