The first step is to find out the cause of the failed cycle. Was it less or poor quality oocyte, was there a problem in sperms, what was the grading of embryos, how was the endometrial lining, and finally, if the endometrial lining was everything was fine, then it could have been Implantation Failure. If any of the above factors can be modified, it is done by changing the protocol. If there was any problem in eggs or sperms that could not be corrected, we moved to donor eggs or donor sperms program. We keep a minimum gap of two months between two cycles.