Thanks alot for the info guys I really appreciate it.
Prior to trying this gluten challenge, I hadn't gone gluten-free, but I also didn't eat gluten on a regular/daily basis. So I figure if I start feeling continually sick in the next few weeks after eating some gluten every day, I should hopefully be glutened enough to go back to my GI and do a gluten blood panel and maybe an endoscope with biopsy. (Although I'm really hoping to avoid the endoscope if possible...)
I have been keeping a food journal as well, but so far I haven't been able to see a pattern yet. I'm going to keep at it at least for the next couple months though.
One last question: How long is a gluten challenge on average? I've read anywhere from 2-8 weeks?