Maybe nothing, or she may be pregnant. If you aren't having sex nothing is wrong. If you are having sex, then you should be pretty nervous and praying like heck you haven't gotten her pregnant, unless you are an adult and plan on being together. Still, it's not all that unusual to be 3 days late. If you have gotten her pregnant you should be a man by being a father to your child.
Stress and hormonal imbalances can cause your period to come late.
Stress among other factors can cause you period to come late. If you've had unprotected sex you could be pregnant.
you could just be having an irregular period even if you dont usually try counting to 28 days from when it ends and that is usually the day you are due to have a period.
you are screwed im docter octupus
It means your period is five days late. Only you know your chances of being pregnant.
Yes. When you have only recently (around 18 months) started your period, it will be irregular and you may miss periods some months altogether. This is perfectly normal and doesn't mean you're pregnant or anything's wrong!
Yes, sometimes your period can just be late. You can check this site for more information as to why it could have been late. http://www.scarleteen.com/article/pink/m_i_a_or_dude_wheres_my_period
What if you are three days late for your period? It's normal for there to be around 7 days variation from your average menstrual cycle. A few days 'late' isn't a big deal, as long as you're not sexually active no reason for you to worry about it.
pregnancy
There are a few reasons why a person may have a period that is 9 days late. The person may be pregnant or it could be stress related.
Late menopause.
If you are sexually active then you could be pregnant but if not then you could just having a late or irregular period.