Several things...regarding infection, a good functional medicine doctor could recommend the basics. You may be able to discover the basics by looking at the writings and podcasts of people like Dr. Michael Ruscio and Dr. Will Cole. I don't mean to overemphasize infections but undiagnosed infections seem to be something most people overlook when dealing with some form of body-breakdown set of symptoms. For example, if you had lyme (for which the usual test gives many false negatives) that could be part of the issue. Also, I did not see CRP on your bloodwork which is one of the first things I would look for since major inflammation would say something is going on that needs to be resolved. I tried to find your profile and saw nothing in the "about" tab about your history, but to be clear, I think many people these days under-eat, and IMO you need to be in a major calorie and nutrient surplus if your body is trying to heal itself. Ok, I hope that helps.