AF due 2/19-2/20 anyone?

Hi ladies! My AF was due either yesterday or today. One app says yesterday and Glow says today. Just wondering if anyone else has those same days and maybe what symptoms you've been having? I've been cramping which is not normal before AF, extremely tired, headaches everyday for a week, and a little nausea yesterday. I don't want to buy any tests yet because I usually always test early and get a bfn so I am trying to hold off. Oh and my cm has gone from clear stretchy to whitish through the middle of the night...so much, I thought I had started my AF. Anyone else in the same boat?