Weight loss before period

Have you recently been sick or has something been stressing you? Maybe you haven't been eating as much for some reason. Do you have a loss of appetite? All of these could be reasons for while your period is late. Any types of slight changes in the body can cause a period to be late, ie. weight loss, stress, illness.

If I were you, I wouldn't worry about it too much though, you are young and your body is going through many changes. If you start losing weight too rapidly, please go see a doctor. How do you feel in general? If you generally feel pretty healthy, but you're just stressing out about a late period, then try to relax and go about with your every day routine. Your period will come eventually.