I'm so confused!!

Alexis
Okay so according to glow AF is forever late.... I've take two pregnancy test and both came back negative..... My cycles have started to go irregular... And last night went I went to the washroom I whipped and there was Bright light pink blood... So I figured it was AF... Went this morning and there was a very little bit of very very light pink blood... It has completely stopped so I'm not sure if it was AF or if I was implantation bleeding because know I have no idea on how my cycles are going... What should I do?!? I just want to know what's going on!! And that seams impossible!