I rubbed my penis to my gf's vagina but not put inside and not ejaculated also on 20th sept and her period end 19th sept of that month.and then I within 12 hour I gave her unwanted 72 and on that day she felt some cramping (one time) and then on 27th sept she had withdrawal bleeding till 4 days.but till now 26 th November no period has come.she did pregnancy test on 2nd nov,7th nov,22 nov with prega news kit ,3 tests are negative.is there any chance of pregnancy.we can't afford pregnancy plz help.why her period isn't coming.