How does the next paragraph end?

How to determine why your period is late
Consider the possibility of pregnancy.
One of the most well-known causes of a late period is pregnancy. When you become pregnant, you no longer shed the lining of your uterus, which is what causes your period each month.
If you are sexually active, you should consider pregnancy as a possibility-even if you are careful. No form of birth control is 100% effective, so there is always a chance.