As per my earlier asked query, my follicle size is now 18 MM. This is as of 19th day. As this is normal follicular monitoring, not any ovulation induction, doctor advised to wait for 2 more days. If it does not rupture naturally by 20th day, then my doctor will go for trigger injection. My doubt is once the follicle rupture either naturally or by injection, then period will not happen for 13 to 14 days after that? If conceive happen, then well and good otherwise period will come after 14 days only, not immediately? I am asking this because my period length is 25 days since last 5 months. Please advice.