Cm and ovulation confused tmi

Emma • 23 mummy to 2little boys
I had my first positive opk 3days ago and another 2days ago. Along with ewcm for 3days. Today I've had a lot of ewcm so done another test and it was negative. My question is if I'm not in my lh surge why am I still getting ewcm surely I should have ovukated yesterday? Cervix is also high soft and open today. Picture attached