thyroid problem or something more serious?

Hi, welcome to the ehealth forum and I am glad to help you.
You seem to be concerned by the symptoms of tiredness and excessive sleepiness alongwith cold hands and feet.
Hypothyroidism, sleep apnea, narcolepsy, anaemia and drug abuse are the first possibilities that need to be ruled out in your case and if the same are not established, the diagnosis of CFS (Chronic Fatigue Syndrome) might be contemplated in your case.CFS is a diagnosis of exclusion and requires the fatigue symptoms to be present for 6 or more months. Cognitive behavioral therapy is directed at changing condition-related cognitions and behaviors through explanation, challenging and changing cognition of fatigue-related symptoms, developing coping skills, emotional support for patients and their families, relief of symptoms that actually interfere with function. Patients with limitation of activity should be started on a schedule of graded remobilization determined by individual tolerance and, if warranted, physical therapy leading to a regular regimen of moderate exercise.
Hope this helps. Take care.
Note: This post is not to emphasise final diagnosis as the same cannot be made online and is aimed just to provide medical information and no treatment suggested above be taken without face to face consultation with health care professional.