Late period.

I'm 6 days late, I went through my whole expected period date on here. I'm normally never late either. I've been feeling pretty weird compared to normal. I feel sick to my stomach, mostly in the later day though. I get killer headaches, I feel tired all the time, get dizzy sometimes and (tmi coming right now ) I feel like AF started sometimes because I'll feel wet in my underwear, but it's just increased CM and I never get that much. I want to test, but I don't want to be disappointed. What do you guys think?