So confused!

Glow says I'm ovulating (I know it's an estimation), I am now on day 4 of "flashing smiley faces" on my clear blue digital opk tests & only faint lines on my opk test strips. My CM is increasing, but still similar to "lotion" in consistency. I've calculated on several websites I'm set to ovulate on the 19th (my last cycle was 37 days). I'm just tired of trying to track and getting several mixed results. 🙈