I was diagnosed at the age of 23 and had RAI. I would go with Dr.’s recommendations. I have had children and one is at a great college now (re: your question about having children).
Tylenol PM helps. I take a half-dose (one pill) so I don’t feel too groggy in the a.m. I take it the night after the previous night (when I didn’t sleep well). It’s not habit-forming.