Igot my last periods on 5sep at 12 am, my period cycle is 28-30 days. I had protected sex (but condom was torn off) on 14sep so took i-pill and no withdrawal bleeding till now so is there chances of pregnancy? Also confirm which day should I consider as my period 1st day, 5 or 6 SEP? And when can I expect my next period? As I heard that i-pill changes the menstrual cycle.