my Biology teacher skipped

Hi all, I thank you all for full-hearted advice that you have been giving us in this form. I have come to learn so many thing that my Biology teacher skipped. I thought I had some problem but now I have come to learn I can bre used as a good example of the health guys. I wish to explain something of which I know some of you have come across. Why does a mother who is pregnant by IVF needs to be injected with progesterone hormone. This hormone plays a great role in maintaining pregnancy. It is naturaly produced by the ovary to prevent miscarriage There is a certain clinic that i may wish you pay them a visit and learn more. Hope this one help someone. If you may have some other question am always available.