period? but faint positive

Rhiannon
Hi ladies 
So my period was due 2 days ago... And so far I'm having brown discharge / blood (sorry if TMI) and yesterday was pink blood,  now back to brown -  but it's only when I wipe, would it be unlikely implantation bleeding given it was pink yesterday and it's been happening for around 3 days? Ive taken a pregnancy test and I see a faint line. Am I loosing it? Does anyone else see it?