yes every cycle! I used to get patches of ewcm before ovulation and sometimes after. typically I get it for a bunch of days before O. The weirdest thing has happened the last two cycles, though, in which my temps have possibly done the real shift two days after ovulation (ovulation then being deteremined by ewcm, opks, and FF's algorithm and not just the temps). It's really odd!
Everyone on here says temp temp temp and kind of dismisses opks and mucous readings in comparison but I think all of the signs are important. That being said, based on your chart, you have not ovulated. try opks!