If a woman get the progesterone supplementation the day before the transfer and the uterus lining looks great, can the delayed progesterone administration be the cause of implantation failure?
It's not a cause in itself. If it is indeed due to progesterone deficiency there is probably a connection, though it's usually more complex than that.
I agree with Dawn. This is likely not the cause. Implantation failure is by far and away the leading cause of transfer failure and any number of factors can cause the embryo not to implant successfully. Don't be discouraged. It often takes multiple attempts. Trust that your clinic is providing the best treatment possible and if you have any doubt that this is the case you can visit the link below to locate a high quality agency in a state near you. Use the interactive map to locate your state.
http://repromatch.com/surrogacydonationresources.html
Sailor (of ReproMatch, LLC)
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Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them
