tablet given to your wife is a progesterone preparation. This is given in early pregnancy
to support the pregnancy . As, your wife had problems in conceiving, luteal phase defect, that is progesterone deficiency
could be one of the causes.
This medicine is safe in pregnancy.
She should continue taking the thyroid medication.
Also, she should take folic acid
Hope this is helpful to you.
Dr. Mrs. Sumeet Baheti