I'm 20 years old I was 14 when I had my daughter, shes now 5.
Anything is possible, I would take a test.
Try not to stress over this, that will / can make a period late if your not pregnant.
If you are, please see a doctor right away so that you will be taking care of yourself, and your baby.
I was a very scared young girl at 14 having to tell me partents they we about to be grandma and grandpa.
If you have any questions, I will answer as best as a I can.
If you think your af was 6 days ago, you can test now.