Thank you for your suggestions. I recently had someone else suggest I go to a school of medicine as well, so perhaps I should give that a shot. I'm just so sick of throwing away money on doctor after doctor and traveling all over the place just to be told that there isn't anything wrong with me. It's very wearing.

I did try cutting out carbs twice, and both times I did feel a lot better. However, about two weeks in, I also almost passed out both times and had to discontinue the diet. That was when I was a vegetarian, though, so my low-carb options were very limited. Perhaps the diet would work out better for me this time around.