BCP & CM, what the heck is going on?!

Maddy • 31 • Married to the love of my life • Mom of 2 boys • Pregnant with boy #3

I quit BCP in December and have had 2 cycles with 24 days in between (which is what it was before I took BCP). However, this cycle I have had almost ZERO CM...dry as the Sahara. I’m on CD16 now and every OPK since CD7 has been negative. What the heck is going on? Next cycle due Feb 9.