Confused about ovulation test results

Ann

Im so confused.. this is the first month i used ovulation test. The first day was dec 1st and i thought i got positive right away. Then next day it started fading away until dec 3 then dec 4 it’s starting to get darker again. Then suddenly just right now it looks like positive again. What’s the mean? What is going on? Which real positive?

? For sure i am not pregnant because i did pregnancy test and it is negative. Please advise. Thank you.