The pattern was the same in all three case, lower progesterone levels. After the first miscarriage , I was asked to take
baby aspirin and prometrium with the subsequent pregnancy. I anyway miscarried. I was referred to a reproductive endocrinologist. He checked for genetic disorders in both me and my husband. He did the clomid challenge test , checked for abnormalities in the uterine wall , checked thyroid level , blood sugar. Everything came back normal.