Menopause, Sudden Weight Gain, Thyroiditis

I am 50, two years in menopause, and was diagnosed with Hashimoto's thyroiditis for 30 years (nodule detected via nuclear scan & ultrasound). For the past 25, I have not been treated for it. MDs have deemed my blood results inconclusive. So I have lived with my symptoms for that long. Menopause and recent bilateral mastectomy surgeries (no chemo or radiation) exacerbated symptoms.

Alternately comfortable then cold. Extreme and sudden weight gain though I eat significantly less; appetite unchanged which means I am hungry much of the time. Sleep study revealed REM cycles too short and continual disturbances occur during deep sleep, so I am constantly awakening during the night. Extremely fatigued by mid afternoon and ravenous. Old hip injury has suddenly reappeared. Makes standing painful. I've very rarely had headaches in the past, but I get them about twice a week now, at my temples with neck pain.

I abhor heat and prefer rainy, cool days. My disposition is usually calm, rational, kind, and compassionate. I am always in service to others even when I am loathe to help. My life often does not seem like my own.

My main concern is the terribly uncomfortable weight gain around my midsection. The smallest meals bloat me, and the skin around my stomach feels stretched to the point where breathing is hindered. I am usually a shallow breather.

Is there a remedy for me?