Ovulation Timing is CONFUSING.

I use the clear blue advanced ovulation testing and usually love it. Lately I have been going from solid O (low) to peak solid smiley the next day! I usually get my peak 11 days after my period so I start testing around 9 days.

My husband and I had sex in the morning and I felt some cramping/slight backache a couple hours later so I tested. I got my solid smiley & was very surprised. Day before was the solid O.

Do you think the cramping was my egg breaking through the ovary? Or ovulating in 24-48 hrs?

What was your experience and did you conceive?