Usually when you see the EWCM you should ovulate with 24-48 hours.
Don't worry about your chart, but do follow your mucus: that's a more accurate way to predict ovulation!
You also have to remember that your body does not ovulate on the same day every month. I use those OPK it really helps me.
Follow your body's signs - not the calendar - when you see EWCM - go for it ! Good luck and SSBD to you ! Hope to hear happy news soon :D