Well it depends. If your period is usually on time it could mean something is wrong. My period is usually all over the place so I don't really worry if it's late. Maybe you should see a doctor. Are you on birth control? If you are the bc can sometimes cause you to have a light almost nonexistent period. My friend was on bc and when it was time for her to get her period she missed it completely and had a bit of spotting. if you are really concerned see a doctor.
