What Are The Chances Of Normal Levels When Suffering From Hashimoto S?

I was born with Hoshimotos thyroid disorder. I was very hard to regulate with medication so when I was 9 I had my thyroid irradiated with I 131. I was eventually stabalized on 125 mcg of Synthroid. I ended up losing isurance so I have been off my high dose of synthroid for about a year and a half. I m in my early 20s and now have insurance and just had my labs drawn. My TSH and T3 levels are normal. I know that I had a nodule on my thyroid that they found 3 years ago and I don t take any supplements. I have no significant health history and don t take any other medications regularly. Is there any reason my levels could be normal? My doctor appointment isn t for another month and I m worried because people with hypothyroidism untreated don t just all of a sudden have normal levels.