Positive ovulation test?

Hi everyone! This is the first month my husband and I are ttc. I stopped the pill at the end of November and seem to be having a normal cycle the past 2 months. I started using opk's this week and was getting clear negatives for a few days. Today I got this - the line is definitely darker than it has been, but not sure if this is a positive... ​ 
​This is what I was getting the rest of the week - there's clearly a difference, but not sure if it's enough.