Implantation or AF

Had this this morning (first pic) and then after an hour I had light spotting and I assumed it was inevitably AF. I'm 2 days early (I'm never early, always 7+ days late- 37 day cycles usually) and it's really really light. Normally my first day of AF is bright red that is very liquid-y and has a few clots. All day I've had very very mild cramps too and I've been feeling sick with back ache. I don't experience PMS ever. This is the first month I was convinced I was pregnant, I just felt like I was, and now this :-( When will it be my time?