Re: low thyroid during pregnancy ?
I am assuming that your first trimester bloodwork indicated a low TSH level, if you haven't had T4 and T3 tests done yet. That happened to me during this pregnancy as well. I've never had a thyroid problem before now. A low TSH generally equates to hyperthyroid, too much thyroid hormone being released into your body (the TSH tell the thyroid how much hormone to produce, if it's low, it's telling your body to produce more than is actually needed by your body). The thyroid board has been very helpful for me in trying to figure all of this out. Are you having any symptoms of hyper- or hypo-thyroid? Hypothyroid symptoms are closely related to first trimester pregnancy symtoms - fatigue, lack of energy, weight gain, sensitivity to cold, etc. Hyperthyroid symptoms include racing heart, sensitivity to heat, jittery, anxious, insomnia, weight loss, etc. Make sure you mention any symptoms to your doctor.
I know it's hard, but try not to worry too much. There are some risks to the baby, but if it's managed early on, they can minimize those risks. If you read info on thyroid problems during pregnancy, it is scary, but my OB assured me that those risks are if a thyroid problem goes undetected and untreated during pregnancy. That's why they check it in the first trimester. So, there is a very good chance that your baby will be fine since they caught it early and can treat it.