Pcos and never have periods!!

So for last year year iv had hardly any periods. Iv gone from having brown spotting, pink spotting sometimes red over a verias of times. Iv taken loads of ovilation tests, taking the foloc acid and have sex all the time and yet we still arnt pregnant. Iv never got a positive ovilation test and i just give up after so long. Is there a chance i could still ovilate even with out periods im stressing right now iv had enough