Somebody please help! Any insight appreciated. Feeling really panicky

K • mummy to 1 daughter and 4 sons #6 due august 17
I had positive opks on evening cd9 and morning cd10 and all negatives since then. I really thought id ovulated because my cm has dried up and my cervix is extremely hard. But my bbt chart doesnt show ovulation!! Was this an anovulatory cycle? And why on earth would my body be acting like this? I was feeling positive about this month and now im starting to really worry