Cycles and ovulation with PCOS

Bree
Hi all! I recently found out I have PCOS...I came off of birth control in October and when I missed 2-3 periods I knew there was something wrong. I was diagnosed with PCOS Jan 28, started metformin immediately working up to 3x/day. Shortly after starting met, I got my period and it lasted 17 very long days, just ended yesterday. Not sure yet what my cycles will be like moving forward or if I will ovulate. Just wondering what others' experiences are with using Metformin and cycle lengths, when you normally ovulate, etc.  
Thank you!!