TMI does anyone have any ideas ?

Af was due last Saturday (12th nov) didn't come.since Tuesday 15th I've had this.ive had a panty liner on but only getting tiny amount pink on it been like this for 3 days now. No flow just pink mainly when I wipe. Took test 2 days ago bfn. Usually I get red blood then full flow and bad cramping and really bad and clots for about 4 days after.this is all I have had absolutely no sign that it's going to start properly. Does anyone have clue to what's going on here ? Not sure what to do anymore.