Hi I am 15 years old and I will be 16 in January and I have not had my first period yet and I have most of the signs. I went to my dr. Appointment in august last year when I was 14 and she asked if I started and she was surprised when I said no. She told me if I didn't my period by my next appointment, which is in a month and a half I would have to have tests done. Is something wrong with me ? And my mom and sister got theirs when they were 14.