You might not have ovulated if you didn't get the fixed smiley - but, as said above, you could have just had a short LH surge and missed it. It is possible to not ovulate and still get AF on time though - I have (Day 21 test confirmed annovulation). Don't worry about it; try to see as the start of a new cycle and another chance.
Odds are you probably did ovulate as your period turned up bang on time.
The OPK tests are not 100% reliable - if you have a short LH surge you can miss it altogether if you only test once a day. The best thing to do is use them in conjunction with other things like taking your temperature and observing your cervical mucus.
I got my af on sun just when I normally get it between 27 and 30 days it turned up cd28.
Not I need a little help here, cd12 I got a positive opk's cd 12 and then started using clear blue ones the next morning I got low kept on going til cd17 which was all flashing up til then. I stopped then as I didnt want to waste anymore cos I've been really ill. I got all my fertile signs up until cd13 and then stopped so I thought well I must have ovulated?
With it being a 28cd maybe everything was right so why was cb still flashing up til 17 I'm confused as to when or if I even ovulated at all?