Anyone have any same experiences

Heather
Af due today.. cycle 28. She's not here yet. No sign of her. I did have light pink spotting cycle day 23 and 24 ( 9 or 10 dpo) Only when I wipped. I wouldn't of noticed it if not ttc. Today I felt like af had arrived. Go to bathroom and it's just a lot of thick snotty cm. It almost looked like a global. What is this? Is it a sign of af? Or possibly a good sign?