Is this opk progression normal?? 🤷🏻‍♀️🤔

Hello everyone! So I’ve been taking opk’s for several days now and yesterday I got an almost positive and I thought for sure it would be a blazing positive today as that’s what happened last month when I used opk’s (Last month I got one that was so close to positive and then the next day it was very positive). Today they are negative and lighter than yesterday. My question is do you think yesterday’s could’ve actually been positive according the pic I’m gonna include?? According to Glow yesterday’s was negative and it also looked negative to my eyes but very close. Is it normal to get one that dark that’s not positive then have lighter ones the next day or so?? If it was actually positive yesterday then I’m afraid I’ve missed my chance because that would’ve put me ovulating today and we didn’t BD yesterday ☹️😢! Thanks for your help!