I feel for you, SanDiego. It's awful to not know what's causing you to feel bad! Something that came to my mind is the possibility that one of your neighbors could be using some kind of pesticides or chemical service that might over-spray onto your property. This happened to me many years ago and it took me months to finally correlate my problem to the truck that came and sprayed chemicals on my neighbor's perfectly manicured yard.
As far as growing tomatoes goes, I like growing my own plants from seeds that are preferably from an organic source and non-gmo. I know gmo tomatoes are only supposed to be available commercially but who knows for sure? If I grow them myself, I at least know they weren't treated with chemicals.
Hopefully, you have the blood work done and find an answer to your health problems.
If you want to try growing your own tomatoes, send me a treemail. I'd be more than happy to send you some seeds. This year I grew a pretty productive paste tomato called Amish Paste and have saved some seeds.