It is important to manage thyroid levels during pregnancy as imbalances can potentially affect the baby's brain development. However, taking the prescribed dosage of 75mcg should not pose any significant risk. Thyroid hormones play a crucial role in fetal brain development, and maintaining stable levels is essential for proper growth and function. If you have any concerns, it is best to consult with your healthcare provider who can monitor your thyroid levels throughout your pregnancy and adjust your medication if necessary. By effectively managing your thyroid condition, you can minimize any potential risks and ensure the healthy development of your baby's brain.