I had sex 2 month ago and I had my period for 2 days last month and this month I'm 2 weeks late. Could I be pregnant? My period is about a week overdue. There is no way I can be pregnant, since I've never had sex. I'm 13 years old and I've had my period for around 2 years and it's never been this late. My cycle is around 29 days and it's been about 36 days since my last period. I'd really appreciate some help.