It is necessary to check the thyroid in early pregnancy. It is very important to keep thyroid hormones stable during pregnancy, not only in the early stages of pregnancy, but also periodically throughout the pregnancy to prevent the development of hyperthyroidism and hypothyroidism. A pregnancy that is complicated by abnormal thyroid function increases the risk of fetal malformations, miscarriage, preterm labor, and mental development. It can also jeopardize the life of the mother. Women have to undergo a lot of tests during pregnancy, not only for thyroid hormones, but also for NT, Down’s Syndrome, etc. It is also important to have regular ultrasound checkups and to be on time for maternity checkups. If any abnormality is found, early treatment is also required to avoid serious consequences.