Hey ladies! :) TMI

Just a little bit of advice would be appreciated. 
So I had EWCM with my daily check on the 28th, and BBT I had a huge temperature drop on the 29th and then a small temperature spike from the low temp (see pic) and then yesterday morning I had some pink spotting (again see pic). With CM check today it was watery and cervical position is High, med, and open. According to glow AF is due on the 6th. 
My question is what could this mean? Haha