Hi I need help. Usually my period starts on the 25th towards the end of the month. But on January, my period came on about the 14th jan. And ended on the 18jan. I had unprotected intercourse with my boyfriend on 18jan and on the 21stjan. Today is the 16thfeb and my period has not come yet. There was no ejectuation and little pre ***. What are the chances of me being pregnant? Pls advice! Thanks!