so confused, but am I looking for what I want too see?

Charlotte
Ok guys advice please- confused.com right now.  I'm generally very regular with my cycle- this month we started trying. AF has now come 3 days early- however with no cramping and much more pinky in colour than previously (although slightly heavier than just spotting).  I took a preg test yesterday- which was negative.  Do you think this could be implantation bleeding? Or would it be too late for this? Ideas on what to do? Thanks.