Inclusion Criteria:  21-40 years old women, Women undergoing good quality embryo transfer, Women who are eligible for a single embryo transfer.  Exclusion Criteria:  If there is a diagnosis of a uterine anomaly, If there is a diagnosis of myoma uteri, If there is a diagnosis of rheumatological disease, Women to be transferred other than good quality embryo, Hİstory of previous pelvic, gynecological operation.