You need to see an endocrinologist. You should have been referred to one with symptoms that severe. I would also be concerned about "borderline lupus" -- but this would all be studied by the endocrinologist. Please don't spend a lot of time online or listen to everyone's stories (I am hypothyroid but my story isn't relevant.) What is relevant is that you see a specialist. Please don't wait too long because if you are found to be hypo by the endocrinologist the sooner you get treatment the better you will feel. I didn't experience such a drastic weight gain. That's a pretty severe symptom. My heart goes out to you. Please see an endocrinologist. Best of luck.