Chemical pregnancy??

I had 2 faint positives yesterday... and then today around 8am had brown spotting. I have been up and moving around and the discharge hasn’t picked up.. it’s actually decreased & it’s still brown not pink.

People mentioned a chemical pregnancy... but wouldn’t the bleeding pick up like a period?

My period is due tomorrow. I tested and still either a negative or faint faint line that is not getting darker

** i had what i thought implantation bleeding 4 days ago and that was brown, mucousy with some red blood (sorry tmi)