Not sure...

So I had spotting (very light and only saw it when I wiped, light pink color) 4DPO, I've taken a test the last two days and nothing. According to my calender I still have another 6 days til AF arrives. I'm so anxious and want to see a BFP, but do you think I should wait another six days to test again or just take tests everyday like I have been. I feel like I am becoming a pee-on-a-stick junkie!