Should I test or no?

Okay, I am 7 days late. Should I take a test or wait another week or so? I am afraid it will say no... I have been very tired lately, it's been extremely hard for me to crawl out of bed at 5 am for work. Dizzy/lightheaded from time to time. Appetite comes & goes. Just my nipples are slightly tender. & this might be TMI but I feel like it's important lol... Lots of thick CM when I  use the restroom. Thoughts?!