You could try some HRT patches - menopause symptoms can be similar to under active thyroid. I have my blood checked regularly for underactive thyroid as have had symptoms & have family history of it, but they always say it’s fine.
Local vaginal oestrogen should help your UTI’s etc and can be used with other HRT safely, plus no limit on how long you can use it for. I’m 53 & have used it for yrs - I was in constant pain & now longer get any UTI’s. I use Vagifem but a cream may be better for you