When it is not possible to collect enough egg from any patient in one IVF cycle then your clinician can advise double stimulation or embryo pooling. In double stimulation clinician will do stimulation twice and do successive 2 OPU in one menstural cycle. In embryo pooling clinician may ask you to go for 2-3 continuous IVF stimulation in each cycle and pool the embryos for further embryo transfer.
Embryo pooling is an IVF technique wherein the embryos recruited from the previous IVF cycle are cryopreserved/ frozen. Once all the cycles are completed then all the cryopreserved embryos are cultured till blastocyst stage in the IVF lab and the best is transferred in the wife’s womb. Alternatively, one can do sequential transfer in these patients This technology specifically benefits women with advanced age, with previous multiple failed IVF cycles. This is also very useful in all PGT cycles, especially with poor ovarian reserve.