S.G.
So sorry about your miscarriage. I used to work for Dr. Le. He is a great R.E.
The prometrium protects your uterine lining and makes a nice lush landing spot for the embryo. Usually, you won't have a period until you stop the meds. If your pregnancy test is positive, you will stay on the prometrium for about 12 weeks. If you're not pregnant, you will stop the meds and have a period.
Hope this helps. S.