I've been using opks since cycle day 13 and they have all been negative. I had what I think was ewcm cd 12-15 with a soft high cervix, but negative tests. now my cervix is medium and hard, with dry cm. My cycle is normally around 33 days and last month I had a positive test on cycle day 18, today is cycle day 17. Did I not ovulate this month, or could I still ovulate even though my cm and cervix are infertile right now?