watery CM with tiny white pieces in it?!

Tara • 32• Married • Almost 3 years TTC • 6 IUIs • Roman James , July 7, 2019 💙 Baby #2 due May 2023 💚 through IVF 💉
I've been TTC now for 11 months so I've been tracking my CM for a while. 
I'm due for AF in 4 days and I noticed today that my CM is watery and has little tiny white bits or flecks in it! (It's hard to describe)
I was wondering if anyone had this before because it's new to me! 
Thanks in advance 

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