my periods are not regular from starting.its started at the age of 14.once i checked it n doctor said that after 3 month course it would be correct but its not

Dear Anonymous,

Even though, many times, in the beginning your period can start irregular and then regulate itself within the first three months this isn't always the case. During your teen years, it is "normal" to have irregular periods, throughout the years and by the time you reach adulthood your periods will regulate themselves-- but be aware that this can take months and years. 

Here's a great breakdown of the way your cycle works and how common irregular periods are during your teen years: http://kidshealth.org/teen/sexual_health/girls/irregular_periods.html

Hope this helps!

Rosa