Thyroid & IUI

Question....I do not have a thyroid. I had a total thyroidectomy in 2015, so I’m totally dependent on medication. My TSH level is 0.33. My endocrinologist said that it was a fine level to get pregnant. I was pregnant last December(tsh 0.25) but lost it at 9weeks and my tsh at that point went up to 9.65. People have told me oh you need to be around 2, some have said below 0. At this point I don’t know what to believe. 🤷🏻‍♀️