implant blood or Period??? with PCOS

Hey hey, I'm here to post what every women struggling or not in the TTC department. so here are the deets. I started my last period on December 12 and I believe i ovulated on the 23rd and had sex on the 22nd... todayyyyyyyyy... I went to the bathroom and whipped and for sure thought I was starting my period (pretty pinkish redish blood)... now, it's nothing but a brown tinge when I wipe. I took a pregnancy test two days ago and it was BFN. So, here I am... did i test too early??? could it have been implant blood??? should I test again if I don't start ... I really hate all this... oh yah on top of all this I have PCOS.. yayyyyyy!!! what do u all think???