vaginapagina | Ovulation/period question

I *cannot* believe I'm about to say this lol but, I'm watching the Kardashians show on E! right now, and have a question about one of their situations. Apparently Khloe has been trying to get pregnant for like a year, which I'm assuming means she is not on any BC and is not using condoms. She just went to a gynecologist and found out that she isn't/hasn't been ovulating and that's why she can't get pregnant.

This got me thinking...if she isn't ovulating, doesn't that mean she's also NOT having a period? I just wondered because you would think, if you hadn't gotten a period for a year (give or take) while you were off BC, and you weren't getting pregnant, you would figure out something was wrong well before an entire year went by. Or is it possible that you can still have a period without ovulating? Don't think so, but I'm not exactly sure. Is it possible that some BC a person was on BEFORE they started trying to get pregnant could keep them from having a period for a year while the hormones re-balanced themselves?