No EWCM on day of Ovulation

I’ve had VERY heavy EWCM for the last 5 days. I also had a backache two days ago like I usually do with ovulation, however my estimated ovulation day is today. My EWCM is gone, but I’ve also had cramping/twinges in my left side like I’m ovulating. Im so confused if I ovulated already or not 😩 Am I still fertile today if I’m ovulating but there is no more EWCM?