Ovulation?

I have a question that I cannot seem to get my ob/gyn to answer to where I understand lol.  My periods are irregular, around every 30-45 days, and I was diagonsed with PCOS earlier this fall.  Does this mean I may still not be ovulating, even with periods, or just that I do not have a normal cycle and can ovulate anytime? I guess I am just confused on how I get my period and still may not be ovulating?? Any ideas or help would be awesome!! Thanks!