This involves stimulating the ovaries to release more than one egg for the treatment month with fertility medication. Then right before ovulation, the eggs are collected under sedation anaesthesia via a small procedure involving a fine needle through the vagina. The eggs are then fertilised with the sperm by either immersing them in the sperm (IVF), or by selecting the sperm and injecting it into the egg (ICSI). The fertilised egg (embryo) is then cultured in the laboratory and then inserted back into the uterus 5 days later, to await implantation (attachment to the uterus).