False ovulation?

TrustingHim • TTC 4 years with my hubs for baby #1 💗 Finally expecting our little princess October 2019! God is good all the time!
Okay, this might be a stupid question but I had to ask..... Is it possible to get a false positive on your ovulation test
Also when you receive a smiley face, does that mean you are ovulation at that day or will ovulate soon or end of ovulation?
Is it possible to ovulate and not have an egg ready? 
The reason why I'm asking these questions is because I have received my first smiley face and we immediately ...... You know? Lol.