From what most of you are saying it sounds like CFS. I asked my doctor about Epstein Barr and he was very dismissive, as well as CFS, because there are no affirmative tests. I also have allergies, asthma and unexplained tachycardia that I take medication for. My thyroid has tested normal the last two times, though it has been off before. I am getting ready to have allergy testing done and hopefully start immunotherapy. Apparently allergies can cause your immune system to be ineffective. I have been working out for 4 months and see some improvement with the excercise. Thanks to all for your helpful advice.