Light bleeding...faint positive test.

So I've gotten 4 positives (with the flat frer) they are progressively getting darker. Well today the day AF was do u started spotting..
Well more than spotting (TMI) it's pink, their when I wipe, no clots. Barley any on the pad. But still spotting.
Should I take it as a chemical? Or is their a hange everything is fine? 
Any insite would be great(: obviously I will cal my doctor but they are closed until Monday!