Ovulation after lupron

Hey guys, I just wanna ask, does lupron throw off ovulation, even after coming off of it? I was on lupron from 11/2012-04/2013. My doctor assured me that my ovulation would resume by the next month. Hubby and I have been ttc ever since may 2013, with no luck. I believe the lupron threw off my ovulation, and now it's very difficult to figure out when I O. Anyone else going through this? Can anyone help?