Thanks so much for all the reassuring responses! Unfortunately, I did google, and I regret that. stupid google.
I was also able to talk to a friend of mine who is on meds after having her thyroid removed due to cancer and it helped me a lot too. As long as I can find a way to NOT forget to take the pill, I think I'll be fine and I'm happy that they found it and that the exhaustion I'm feeling now will be getting better.