Sexual intercourse before embryo transfer in assisted reproductive technology might enhance probability of pregnancy: An observational study

Modifying the maternal immune system is necessary to facilitate embryo implantation. Modifying the immune system can occur in several ways, including maternal exposure to the partner's seminal plasma. Seminal plasma exposure can occur through sexual intercourse. To prove this theory, we investigate the effect of sexual intercourse on the chances of successful in vitro fertilization (IVF) in both fresh and frozen embryo transfer (ET) groups in terms of biochemical and clinical pregnancy.