Thyroid problems (hypothyroidism, when the thyroid gland functions poorly, such as Hashimoto’s thyroiditis and hyperthyroidism when the thyroid gland functions too much, such as Graves’ disease) put pregnancy at risk and can lead to miscarriage.
The messages of the studies are clear .
TSH must be less than 2.5 before conceiving.
We must check anti-thyroid antibodies.
Insulin resistance is very common in patients with polycystic ovary syndrome and must be controlled. In addition, uncontrolled diabetes leads to a 68% increased risk of miscarriage.
Also, we must measure prolactin.
Measuring progesterone during the second phase of the cycle is not helpful.