First cycle with clomid!

AF was on 31st of January it lasted for 4 days and my cycle is between 23 to 24 days, I took clomid 100 mg from day 2 to 6 of AF.

I took a digital opk on February 8th 2:34 am it was positive and I’ve tested again on the same day at 1:30 pm it was negative and I got another positive on February 13th 11:35 pm, so when did I ovulate?? Does anyone know why I got to positive opk’s?

TTC #1