What is going on?!

I got my first positive on Sunday. It was darker yesterday and now even darker today. Glow has now changed my ovulation date to today rather than yesterday, it was originally supposed to be Sunday but I didn’t get my first positive until that day. I know you are supposed to go by the first positive, but I kept testing. Now I know why they say not to. Can my body still be trying to ovulate? This is only my second cycle since my 18 month old was born, so my body can still be messed up. I did not use opks last month. I should add I had watery cm on CD 11, EWCM on CD 12, and am currently on CD 19 if that means anything.