What is this ? Pregnancy sign ??

Brittany • Christian Mother , & wife ,baby number two Due march 27th??
Okay I'm well over a week late . However I started getting this milky cm a few days prior to when af was due ? It's alternating between really milky or thick and creamy ? This morning there is so much of it ! It soaked through my pants :( what is this ? I always get clear cm before AF but it's never milky , and it never last this long either ?