Bummed

So I don’t really know what to think at this point. AF was due today but yesterday I started getting pinkish wet discharge only when I wiped. I had back aches at night. Today is the same thing. It is only when I wipe and I barely have anything on my pad. AF is usually horrible. I took a Clear Blue and it showed negative. Didn’t see a + at all. I read online that it won’t show as positive if you’re having implantation bleeding. Today would be 16 days past estimated ovulation. I just know my body, my AF isn’t usually like this :(. Do I say it’s my period or do I wait until I stop having the pinkish discharge and test again?