Hi,
A uterine biopsy done at a certain day of the month..tests progesterone levels...I was found to have a luteal phase defect and was not prducing enough progesterone. I had my first miscarriage at age 24,,then went on to lose six more pregnancies..none of which I was on progesterone. 4 were uterine, 3 were ectopic. I feel that if I was on progesterone for the first 3 pregnancies, I may have carried them. But,,back then, they let you have 3 miscarriages before they tried to find a cure. I did 4 IVF tx's and even got pregnant 2x on my own in between the IVF's, but I did not know it until it was too late to get on the progesterone, so I lost those.
I would say,,definately have the uterine bx,,you need to know if you are making enough progesterone,,or,,sometimes the doc's will just put you on the suppositories prophylactically to prevent miscarriage.
It is great that you have no trouble getting pregnant..it sounds like you just need some hormonal support. Take care, Cathy