Does anyone know how big of a role (if any) progesterone plays in thickening the endometrium after ovulation?
I'm wondering if it is possible for progesterone to be high enough to confirm O but too low to produce an adequate lining for a fertilized egg to implant into. Which would also cause lighter periods.
I might not even be thinking of the right hormone.


Re: Progesterone & Endometrium
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