Missed Period vs. Stress?

[rhetoricians.livejournal.com]

Hey ladies. :)

I'm 19 and have had a regular period ever since I started having mine ten years ago, always within 2 or 3 days of each other. However, my last period was in late May. I am not sexually active, and have not been on birth control since April.

I am really bothered.

My job has been an unbridled source of stress since late May, however. I have been in an insane amount of high blood pressure and angry sadness since I started working in this place ... is it likely that the stress my body has started to undertake is causing my period to be over a month late? Is this something I need to see a doctor about? I am really worried.