Yes. Take a pregnancy test
It means your period is five days late. Only you know your chances of being pregnant.
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.
If you are sexually active then you could be pregnant but if not then you could just having a late or irregular period.
5days
If you have had unprotected sex, and now you are two days late , then you could very well be pregnant.
A late period dosent always mean you are pregnant, You could just have a late peroid. But you might want to check.
Stress and hormonal imbalances can cause your period to come late.
Can a woman get her firs depo shot 6 days after her period?