Tracking with PCOS

Hi all! I'm interested in hearing from other women with PCOS who have irregular cycles. I will have my period for weeks at a time, and then not have it for months. There seems to be no pattern, so I don't know how helpful all my tracking actually is. I was on Metformin for a while to try to stimulate ovulation, but it made me incredibly sick so I had to stop. I have an appointment with a fertility specialist soon, which I'm sure will be super helpful. Does anyone here have similar issues with cycle irregularity? How do you track/know when you are ovulating? I appreciate any insights!