Any thoughts??

My last cycle started September 22 ended Sept 25th. My fertile week was October 7th to the 13th (it is possible I ovulates early because from October 4th - 6th I had really clear sticky discharge). October 17th-20th I had light barely there brown spotting, followed by a day of cramps, three days super light pink bleeding (barely covered the tip of a tampon after a few hours use TMI I knon, I'm sorry) then more barely there spotting on a pad since (like I can have a pad on all morning and there's next to nothing on it, TMI again, sorry).

So in total this spotting has been happening for eight days. My period should of started yesterday (the 25th)...any ideas on what's going on?

I have taken two tests while all this has been going on and both came up negative. I also have an appointment with my doctor in Tuesday either way (about something else but will be bringing this up too now). Just wanted some input from you all on if this has happened to you? Or if you have any idea of what may be going on.