Need Help Ovulation!!

Journii` • shower me with baby dust!
OK so guys I came off AF on Tuesday on wensday I did an OPK and it was negative... So today is Saturday I did one today and it still is negative and on my Flo app today is my Ovulation day! I'm so sad and confused! Is it possible to ovulate a little late? My line is so faint! But I don't think I ovulated yet!