Hi dear! Usually the dr will prepare a trigger shot for you to jab before the IUI procedure. Usually the scans will determine the follicles sizes if they are ready to matured. Once u started ur menses, call the kkvif dept and tell them. They will advice u what to do. Be prepared to come almost daily or 2-3 days for the scans to be done.. its more multiple visit then doing IVF which can be 3- 4 days apart to do scans. And ur partner will need to provide his semen on the day of the transfer.. if im not mistaken will take abt 1-2 hours before the insemination IUI. All the best!