The present randomized study will be conducted to compare the safety, effectiveness and tolerability of SC P (Pleyris; IBSA Institut Biochimique SA) with vaginal P gel (Crinone; Merck Serono) for LPS in COH/IUI cycles. The study will be conducted, recorded and reported in compliance with the principles of Good Clinical Practice (GCP) guidelines at the Department of Obstetrics and Gynecology of Magna Graecia University of Catanzaro.