Ovulation cramp/pain and positive OPKs

I've been wanting to know the answer to this for ages so thought I would post in case it helps anyone! I wanted to know when I would get a positive opk after I had my ovulation cramping! Well I had my cramps 8am yesterday, did two OPKs at 630am and 3pm and both were blazing negative. This morning at 9am quite positive looking! And blazing positive at 12pm 😆 this is yesterday's two tests and today's.