I don't think I'm ovulating this month 😥

So this is me and hubbys 3rd cycle ttc. I got off bc at beginning of September. Had a 37 day cycle with a period and had a peak opk on cd23 in October. I am not temping. I am on cd 23 now and still have not had a positive opk, not even a close to positive one!! I recently changed my diet, quite drastically (I cut out dairy, gluten and soy, and limit red meat) and am wondering if that could be the reason why I havent ovulated yet? Or could it be my body still getting used to no bc? Other than my diet I havent changed anything this month, and I havent been overly stressed either.

Any help is welcome!! Thanks