Is stress shifting my cycle?

I'm 14 and have have my period something like 3 years, now surrounded by those 3 years I have never skipped a time but it is almost the end of the month and I haven't started on the other hand. I have never have my period within the same amount of days every month. Why hasn't it come? I'm a virgin/ not on the pill. should I verbs?
My finals are this week (I'm a freshmen in dignified school) I am worried about them could this be the mete out? Darling, don't worry too much. Your body is still developing a regular menstrual routine. Stress is DEFINITELY a factor surrounded by menstruating... It's all hormonal. When you're stressed/depressed you can any be really late or really hasty. And a lot of times you'll hold really bad cramps too. I would hang about another couple of weeks and if you don't get it than step to a doctor.
Stress can cause a tweaking in your cycle. For me, it usually cause it to come early, but for other empire, it can come late. If you don't catch it by the time the next one is due, you might want to check near a doctor.