Why do i get my period so late?

first it came on the 9th of every month but now it comes on the 14th of later than that every month.Why do i get my period so late?
Depends on how old you are, often times cycles don't go by the month either. I have a 31-33 day cycle, slightly longer than a month, so of course it seems like it happens later every month depending on the month. In an extreme situation, stress, illness, weight loss/gain, exercise changes, these things can all cause delay in ovulation and thus menstruation. It doesn't sound like you have a problem though, just a slightly longer than a month period. Track the length in days vs by the month.
it could be ur system is still adjusting or it could be becuase ur stressed out to much.
How old are you? Many women don't become "regular" until they're well into their 20s. Some never do.