I was used the clear blue advanced opk and for 8 days I got the blinking smiley face but never got a peak and today I had nothing. It was just a circle. I'm only 100mg Clomid & 500 metformin. I'm so confused if I ovulated or not. I feel like I did because there was a day I had heavy slippery cm and since then it's not been as heavy. I've also been cramping and it varies between period like cramping to slight cramping. Is it possible I ovulated even tho my opk didn't pick it up?