Inclusion Criteria:  Women between 18-39 years, under study for primary sterility, with BMI <30, AMH> 0.6 (good ovarian reserve), subsidiaries of Conjugal or Donor IA, according to the 2019 SAS Reproduction Guide.  Exclusion Criteria:  Women <19 or> 39 years old, BMI> 30, secondary sterility, previous tubal sterilization, that is, the ART exclusion criteria according to the 2019 SAS Reproduction Guide.