Looking for Answers

I hope someone out there can help. I had surgery in December 2002 and have done very well. I lost from 270 to 137 and looked and felt great by watching my food (modified low carb--a healthier version) and Jazzercising. This last year I experienced several stressful events and began putting back on weight. At 155 I started the CEA-HOW program. Suddenly, it seems, I weighed 118 in August. I kept having boughts of feeling bad, like a one day flu, and just ended up in the hosptial for two weeks in the both in the small town where I live and at Baylor in Dallas with a Bariatric Specialist. My blood pressure was 70 over 50 and blood sugar got as low at 40. Constant low grade fever. They did many tests and kept saying something just wasn't right but I still have no definitive answers. I think the diet and the stress just caused my system to tank but none of the doctors have agreed. Now I'm home and still not feeling well. Has anyone had anything similar to this? I've had a colonoscopy, blood work, CT scans--the works. Thanks Marty in Texas