Clinical Cohort Study on the Endocrinology and Vaginal/Endometrial Microbiome of the Luteal Phase in Assisted Reproduction

This study focuses on an important hormone called progesterone, which is essential for a healthy pregnancy. In the early stages of pregnancy, a temporary structure called the corpus luteum, formed after ovulation, produces this hormone. However, at some point, the placenta – the organ that develops during pregnancy to feed and protect the baby – takes over the role of producing progesterone. Scientists call this switch the 'luteoplacental shift', but they don't know exactly when this happens. Understanding this timing better could help doctors support pregnancies more effectively.

The research also looks at the tiny living things, like bacteria, that naturally live in your vagina and womb. Studies are starting to show that the balance of these microbes might affect whether someone can get pregnant and stay pregnant. This study wants to see if there's a link between your hormones and these microbes, and how they both might influence how well a pregnancy progresses. By gathering this information, researchers hope to learn more about how to give pregnancies the best possible start after fertility treatments.

Ultimately, this study aims to improve our understanding of early pregnancy. It could help us identify new ways to predict how a pregnancy might develop and potentially lead to better care for women undergoing IVF or similar fertility treatments. It's an observational study, which means researchers will be carefully watching and collecting information from participants, rather than trying out new treatments.