No period not pregnant?

Danielle • 25. TTC baby Knapp #1 🍼 married 2 1/2 years, together 8. 💕💍

I was supposed to get my period on Sunday. It’s now Friday. And it doesn’t even really feel like it’s gonna come. I also have been having discharge. Like I’ll just be standing there and CM leaks out. It’s sticky and white-ish. What the heck is going on?