Ovulation CM question

Emily • Pregnant with #3! Due May 6th 2015
I usually Ovulate around CD17 which is today for me... I had a slight drop in BBT this morning But my CM is barely there... Last month it seemed like there was soo much (sry tmi). 
​I figured even if I'm ovulating later it would still be a little moist down there by now. 
​Any advice? Or answers as to what's going on?