Ovulation test

Hi there!

Im just needing a little help. I just started testing this cycle for my ovulation and I feel like I may have ovulated earlier than expected. The lines are much darker on the ones at the top and really light on the bottom one. That would mean I got a peak at possibly Day 12 or 13. It seems off to me because my cycle is around 30 days so wasn't expecting to ovulate until Wednesday or Thursday. The top 2 test are for Day 13 and the bottom one is for Day 14.