I don't think thyroid hormone supplement is likely to give you the reactions that
psychotropic medications are capable of doing. Try to be patient and await the outcome of the blood testing.

Ask your doctor about any expected side effects of medications once you've been
prescribed one or two. That should help relieve your nervousness about it all.

I'd be much more concerned about the unprotected sex, frankly. That's so risky
in many ways, and it would make drastic changes in your young life if you should
become pregnant.

You're in good hands; it will all work out for you well in my view.