Clearblue smiley positive negative positive

So I have been testing everyday with the clearblue smiley vs blank circle (the one with only 2 solids) - well one night I finally got a smiley -the next night it was negative so I thought that meant ovulation occurred but then the following night I was cramping so I tested again and it was a smiley again I’m so confused... has anyone had experience with this or gone on to get pregnant