OPK help please!!!

I started my first round of clomid from day 2-6 I've been using OPKs since day 10 advised by my fertility Dr the darkest line I got was at cd11 which is so early for me I normally ovulate on cd14. Is this normal? Have I missed it? Stressing out right now!! I've made sure we have BD both days since this. I've had ovulation pains and heavy feeling down there today but tests coming back negative. Can hardly see a line. Some advise would be appreciated! 🤔🙂