Hypothryoidism and hunger

Please...please help. I have gained 80lbs in the last two years. It got to the point where I could not lose weight...even working out up to two hours. I was diagnosed with manic depression two years ago, and about 6 months ago diagnosed with hypothyroidism. After my being diagnosed with the hypothyroid, and taking Armourthryoid 60mg, my depression has gone away and i've gotten off my Cymbalta. My extreme hunger had gone away when starting the thryoid meds, but now its back to where i'm hungry ALL the time....please help. I don't know what to do. I can't stop eating because my stomach always hurts from hunger. And I can't work out enough to work off everything I eat.