TTC #9 Help!!

Hey girls , im new here ! Sorry about my english , im from brazil! Here we are : 9 TTC month. I have polycystic ovarian ,but I am thin, I have lost weight in the last 6 months, I practice swimming, eating healthy ... I have no insulin resistance. I've done ovulation control ultrasound in the last 2 cycles without

take clomid and I ovulated, but it didn't work. Today, my 12th day of the cycle, I did a new ultrasound, but ir did not show dominant follicle and that was enough to make me very sad! I am very anxious, with negative thoughts, someone teaches me how stop thinking about ovulation and pregnancy ?! thanks