would you guys say I’m ovulating on cd 20?? Please look & read below!!

So I’ve been testing daily since the end of my period and they’ve all been close to positive but I wouldn’t say quite positive.. glow said af was due Jan 2, my last period was dec 7th... my boobs have been sore I’ve been a little crampy here and there and my lower back is killing me. Last month I got my positive opk on cd 15. ... does it look like cd 20 is my positive?? That first line popped up dark and quick before my urine even made it to the second line.