AF in 4 days why do I have so much of this CM! BTW this is TMI

Mimi • Momma bear 🐻 expecting her second cub💙.
 Okay so I've been TTC for 9 months now and it's 4 days away from AF and my cervix is very open and slippery and has a lot of this CM coming out I've also had some pregnancy symptoms is this normal