ACtually, day 1 starts the day after your period- so it has been seven days. Most women, from what I have read ovulate around days 12-15. But stress and just about anything else can influence this date. So, any time you have unprotected sex there is always a chance. I think the sperm can live inside you for a few days- not positive though. So, you have to keep that in mind as well. If you ovulate the same day every month, then you probably are not pregnant, but that is not a sure thing. You are going to have to wait- and pray that you get your period!! Please stay protected all of time- or else you will have a baby!! It doesnt sound like you are ready for that yet. A few minutes of passion, could turn into a lifetime of responsibility. Good luck!!!
I had to track my cycles for several years while trying to get pregnant. Day 1 is the 1st day of your period. You had unprotected sex on day 13, sperm can live up to 48 hours. With a 29 day cycle, you might ovulate around day 14-15, so it's possible that you could be pregnant.