 Second group were received cetrotide 0.25 mg s.c alone from day 2 to day 8then we initiate GN therapy by same initial GN dose 300FSH150U urinary GN.same adjustment of dose were done and antagonist restarted when DF 12mm, till day of HCG, HCG,OPU, ET were done by same method and under same criteria, luteal support and follow were the same. 