infertile women with impaired ovulation who will be subjected to Triptorelin sustained release(Decapeptyl depot 375 mg one injection )at D-21 of previous menstrual cycle Hormon Replacement Therapy (HRT)Cyclo-Progynova (estradiol, norgestrel)(Group A). All patients received the same luteal support in the form of intravaginal progesterone two day before embryos transfer until blood pregnancy test was performed 14 days later. The classic Testart slow freezing and rapid thawing protocol was applied on stage-2 PN embryos. Endometrial thickness was measured in the midsagittal plane using transvaginal ultrasound (TVU). Clinical pregnancy was diagnosed by measurement of β-HCG level and was confirmed 2-weeks later by TVU.

infertile women with impaired ovulation who will be subjected toTriptorelin sustained release(Decapeptyl depot 375 mg one injection) at D-1 of menses then Cyclo-Progynova (estradiol, norgestrel) (Group B). All patients received the same luteal support in the form of intravaginal progesterone two day before embryos transfer until blood pregnancy test was performed 14 days later. The classic Testart slow freezing and rapid thawing protocol was applied on stage-2 PN embryos. Endometrial thickness was measured in the midsagittal plane using transvaginal ultrasound (TVU). Clinical pregnancy was diagnosed by measurement of β-Human Chorionic Gonadotropin level and was confirmed 2-weeks later by TVU.

GnRH agonist depot( Decapeptyl) will be taken in the previous mid luteal cycle in group A and the first day in group B

pregnancy test-Transvaginal sonograghy