Re: Birth control making thyroid worse?
Anxiety wouldn't be caused by Synthroid itself... only if the dose was too small or too large. Anxiety is often caused by un-, over- or undertreated thyroid, too. It would've been best to have free T4/T3 levels taken to determine a need to start any other anxiety relief. Now, you're 'free-wheeling', trying to figure out the problem.
Estrogen binds thyroid hormone, so most people need a thyroid increase when they start taking it, or a decrease when they stop taking it. If you were already low in thyroid before taking the estrogen, you're even lower now, thus not solving the original problem.
Get thyroid levels taken right away, so you know where they stand. If free T4/T3 are below the range median, they're too low; you'll need to increase your Synthroid. If they're higher than about 70% of their ranges, assume they're too high; decrease the Synthroid. Whatever you do, do not allow your MD to determine your dose based solely on TSH. It's not accurate enough and will probably allow symptoms to remain.
Last edited by midwest1; 04-23-2010 at 07:05 PM.