If you are experiencing a delay in your period and are concerned, there are a few things you can do. Firstly, it is common for periods to be late, especially during times of stress. However, if you have had unprotected sex recently and your period is still not coming in a few days, it is a good idea to take a pregnancy test to be sure. If you are taking birth control pills, be sure to continue taking them as directed to prevent any risk of pregnancy in the following month.