I don't know if anyone remembers, but I started learning Creighton because I was having trouble with symptothermal. I couldn't figure out my CM, and due to work schedules, my temp was all over the place. Some ladies thought I just needed the detailed Creighton descriptors for CM to help me out.
Turns out, nope. I haven't had any at least since starting two months ago. So, time for a referral to figure out what my body is lacking for normal function and to see if I'm even ovulating. Awesome.