I took Prometrium with my FET and my son is 2 now. Now I am 8 weeks pregnant through IUI and I am on Prometrium. With fertility treatment they almost always give Progesterone.
Good Luck
So you also had to take Endometrin with IVF? and you had a successful pregnancy?
Yes. If your progesterone is low, Doctors will usually give you some type of progesterone to prevent misscarriage.
Good luck.