Basically treatment starts once you start menstrual cycle. following which is weeks of jabs, scans, blood tests, and more jabs up till extraction day, where u are sedated n eggs are extracted, fertilised (only part where husband is required) and then cultivated n grown in lab for 3-5 days and then put back into uterus. thereafter, u get hospitalisation leave for about 2 weeks and then go back for yet another blood test to find out if it's a successful procedure.
excess eggs are left to continue growing in lab for another day, and if it evolves into the desired level, it is frozen. otherwise it will be disposed of.
upside of having frozen eggs, u get to skip the extraction procedure if unsuccessful, and u can even keep for future use.