I am currently on 21 day Alysena and threw up a pill on the first week of pills. I did not take a second pill the next day, but I did take the pill I was suppose to, so I only took 1 the following day. Had sex 6 days after the incident and had used a condom. Also has sex 3 other times during the month all with condoms.Stopped the pills on a Tuesday night (Dec 22) and was suppose to get period today (Dec 26). Have also been under stress this month. Will period come at all and normal to be late ?