Thyronorm contains levothyroxine, a thyroid hormone replacement. Sometimes, if the dose is slightly higher than your body needs, it can mimic an overactive thyroid, leading to a fast or fluttering heart rate. Please contact your doctor soon. They will likely order a simple blood test to check your thyroid levels and adjust your levothyroxine dose if needed. Do not stop your medication without speaking to them first.

While a TSH of 16.7 is high for early pregnancy, please try not to worry. Your body simply needs a bit more thyroid hormone right now to support your pregnancy. Since you are already taking Thyronorm (levothyroxine), your doctor will likely need to increase your dosage to bring your TSH levels down to the ideal target range. This is very common and highly manageable. Please share these results with your doctor soon so they can adjust your medication and keep both you and your baby healthy.

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Your body relies on this hormone to keep your metabolism running; without it, you will feel very tired. While light sensitivity is less common, thyroid fluctuations can sometimes cause dry, strained eyes. Since you didn't share your specific TSH numbers, I can't review them, but stopping your medication typically causes TSH to rise, signaling your body needs hormone replacement. Do contact your doctor to safely restart your medication and review your blood test.

Your tiredness and headaches might suggest your Thyronorm (levothyroxine) dose needs checking, as thyroid imbalances can cause this. Nausea and burping can sometimes occur with vitamin supplements like Meconerve (vitamin B12) or Tayo 65 (vitamin D3), especially if taken on an empty stomach. Yes, it is best to temporarily stop your Meconerve and Tayo 65 supplements for about 10 to 14 days before your blood test to ensure accurate results. Please consult your doctor before making any changes to your thyroid medication.

A TSH of 0.21 is only slightly low. In fertility treatments like IUI, a slightly lower TSH is often safer and preferred over a high TSH. It is generally safe to proceed with your IUI next week, but you should not adjust your Thyronorm (levothyroxine) dose on your own. I highly recommend sharing this result with your fertility specialist or endocrinologist right away. They can guide you on whether any minor dose adjustments are needed as you move forward.