During the 7th month of pregnancy, it is important to monitor your thyroid levels as they can affect both you and your baby. A TSH level of 1.9 is within the normal range, indicating that your thyroid is functioning properly. However, it's essential to also consider T3 and T4 levels. A T3 level of 1.9 is slightly low, while a T4 level of 13 falls within the normal range. It's advisable to consult with your healthcare provider for further evaluation and guidance on maintaining optimal thyroid health during this crucial stage of pregnancy. They may recommend additional tests or adjustments in medication if necessary to ensure a healthy pregnancy outcome.