help! when should I take a preg test!?

I'm 7 days late and I'm so stressed. I don't know if I'm late because I'm so overly stressed with school and work, or if I'm actually pregnant. What I'm trying to say is if I take a pregnancy test now, will I get a somewhat of an accurate reading or should I wait another week for my period. 
I'm just so terrified of being pregnant, so I'm kind of scared of taking a pregnancy test

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors