In this course, we will explore significant topics in the field of human reproduction, including recurrent miscarriage, implantation failure, endometrial receptivity, and the microbiome. The inability to achieve a successful pregnancy and carry it to term can lead to emotional distress and impact the quality of life for couples. By understanding the underlying causes of recurrent miscarriage and implantation failure, healthcare professionals can develop more effective approaches to diagnosing, treating, and supporting infertile couples. We will take a holistic approach in addressing these issues, discussing strategies for diagnosis, treatment, and prevention, in order to provide better support for couples facing difficulties on their journey to parenthood.