How is your CM after O?
I've noticed today that mine is very sticky so i searched google and found this.
After ovulation and around the time of implantation the cervical mucus
will lose the egg white consistency and usually because quite sticky. A
lot of women experience an absence of cervical mucus after ovulation
around the time of implantation, but it really varies from woman to
woman. If women pay close attention though they will notice that their
cervical mucus becomes much stickier and sometimes white as soon as
ovulation occurs.
http://www.thelaboroflove.com/articles/changes-in-cervical-mucus-after-implantation/ 