One month ago 17 th jan I am having sex with my gf. But I am not ejaculate in her vagina. But I rubbed my penis with her vagina. My penis was wet. I do not know is it pre-cum or pre ejaculation liquid. How ever after 22 hours she take an unwanted 72. She had not any vomiting or nausea. After taking pill she get her period within 5 days. She get normal period in 22 nd jan. But this month she not get her period till now. We got a home urine pregnancy test 3 days ago. Its result is negative so my questions is 1) her period is withdrawal bleeding? 2) how many days after she get her period? She get her period normally after 25 to 28 days after. She is regular? 3) after her period please say is she pregnant or not? Describe in details please 4) 3 days ago we go urine pregnancy test with preganews. Its result is pregnancy negative. Please say does preganews shows correct result after one month of sex?