I have hypothyroidism and want to get pregnant. Is it safe?

Yes! Women with treated hypothyroidism can have perfectly healthy pregnancies. However, your medication dose must be managed very carefully.

Why is the thyroid important for the baby?

For the first 18-20 weeks of pregnancy, the baby has no thyroid of its own. It relies 100% on your thyroid hormone for brain development. If your levels are too low, it can affect the baby's IQ and increase the risk of miscarriage.

What do I need to do?

• Pre-conception: Ideally, ensure your TSH is in the optimal range (usually below 2.5 mIU/L) before you get pregnant.
• Positive Test Rule: As soon as you see a positive pregnancy test, increase your Levothyroxine dose immediately. A common rule is to take 2 extra pills a week (talk to your doctor first).
• Contact your Endocrine Doctor: Call them immediately upon becoming pregnant.

How often will I be checked?

You will need blood tests every 4-6 weeks throughout the pregnancy to adjust the dose. Your body's demand for thyroid hormone increases by 30-50% during pregnancy.

What about vitamins?

Prenatal vitamins contain iron and calcium, which block thyroid absorption. Take your thyroid pill in the morning and your prenatal vitamin at lunch or dinner (at least 4 hours apart).