Synthroid and negative side effects

I've been on synthroid for three years now, and was caused by stress during pregnancy. i gained 80 pounds, started losing my hair, and was very fatigue after haveing a baby, when the doctor finally thought something was wrong. She uped the dose two times because no changes have been made, Im still at 147 yes 147 on tests. Im on 125mg now I still feel no difference. I going to be 300 pounds by the time they realize its not working. Thank god Im on adderall too because thats they only thing keeping my weight down.