I started taking the clear blue opk 10/16. Got my one and only smiley face on 10/19. We bd 4 times during my fertile window. I know the box says to stop testing once u get ur smiley face but I've continued for the hell of it. If I keep going along testing and IF I'm pregnant ( still too soon to test only 3 dpo) will I start to get smiley faces? Or does that only happen to some people?