Can anyone make sense of this mess?

Originally, it had O at cd21, but it has since shifted because I still haven't seen AF. I do have spotting on my chart, but it was nothing like how AF usually is for me. I had one day (6 dpo) that was like a very light/dark brownish period and the rest were extremely small drops of light pink/watery cm. I never spot during a regular cycle and almost always have 3-4 heavy days with almost debilitating cramps/breast tenderness. No cramps or breast pain this month! I've taken HPTs all week thinking something might appear, but no...I thought I had an extremely faint line yesterday, but I think I probably made it up.