IVF is a treatment in which sperm is used to fertilise the eggs (whether your own or coming from donors). Once the eggs are fertilised (now called embryos) they will remain in an incubator within the laboratory for up to 5 days. The development of these embryos is closely observed by our team and the embryo exhibiting the best characteristics will be transferred back into the uterus. Once this embryo is inside the uterus implantation occurs and the embryo will grow into a foetus and follow the same steps as a natural pregnancy would.