Stress or Pregnant.

Hey all! I just got hired after being unemployed for 2 tears and long story short, my fiance and I have been under a ton of stress. A whole lot of it. My period is a week late now and I am freaking out that I may be pregnant after JUST signing the papers for this job 3 days ago.. is it worth taking a test? Please note that we use condoms and with everything going on it's been a little over a week since we last had sex.