My husband has been having shortness of breath, weight loss 25 pounds, gas, nausea when eating, and fatigue. The doctors have been doing blood tests, chest x-ray, chest CT, ultrasound of abdomen, colonoscopy, endoscopy all normal. We just found out his TSH is 0.4., but his primary is not concerned. Should we be asking more questions? This has all been in the last 6-8 weeks.