Bless your PCP! I've had hypothyroidism for at least 20 years. I had very few increases or decreases in the medication until my j-pouch surgeries. It was haywire for at least 18 months and it's bad again. My PCP was testing me every 6 weeks and increasing the dose each time. A blood testing at Mayo's was so bad that my PCP said if it was that bad I'd be in the hospital. She tested it several days later and it was almost 12. The normal range is .3 to 4.2 with 2.5 being optimal per my GINP at Mayo. 3 years ago when tested at Mayo it was .03 so I have a very temperamental thyroid disease! I have fibromyalgia and chronic fatigue so I have been really dragging on this year.
I saw an endocrinologist for a few weeks ago and she said 6 weeks is not enough time and is having me stay on the current dose for a few more months. It's frustrating as it affects your metabolism and therefore your entire body. Sorry to stay it's not always as simple as taking the little pills. I thought it was a dream disease before my UC diagnosis. I'd say comparing it to other diseases it was not a bad one to have.
She also stressed the importance of taking the medication at the same time every morning and to wait TWO hours before eating or taking other medication.
I'm sorry you are facing surgery and cancer treatments. I hope it was caught in time.
I'd like to take this opportunity to tell all about a simple preventative measure they can do. When getting dental x-rays please request the neck lead protection in addition to the normal one they use. The person taking the x-rays leaves the room or is in full lead protection so it makes sense for everyone to have as much protection as possible. I ask for it every time when the hygienist or assistant doesn't automatically use it. I'm not saying dental x-rays caused your cancer but they might have contributed. Like everything else, we don't always know what caused our medical problems.
Good luck with your surgery and recovery. I hope everyone else facing thyroid problems the best as well.