Trying for 2 years!

Hello Ladies! 
My fiance and I have been trying for two years come August.. a year ago I was diagnosed with PCOS and was not getting a period. I went a whole year without a period. On the 4th of this month I got my period after a whole YEAR! I went to the doctor, I no longer have the cysts on my ovaries. Since I havent had my period in so long, how can I tell when my ovulation is and when I am ovulating???