Weight gain??????

Hello to all it's been a long time since I've posted! I've recently gained about 30 pounds, Not sure if my medical issues are the cause of life in general, my new primary Dr has no clue how to handle my thyroid issues, I've been diagnosed with Hashimotos, and pre menopausal, My thyroid meds have been bumped up probably 6 times in the past yr and she just isn't helping one bit, all my labs are great for my DS but my thyroid is literally in the crapper, I am 15 yrs out and I originally lost 180 pounds but creeping these 30 pounds has me in a panic, I would love to be able to have my common channel made smaller and not sure if it's even done or possible? My Surgeon isn't in my state anymore and I have none of my surgery records due to a divorce and loss of my marital home!! Anyone have an insight on what I can do?