You haven't had a period in over a year due to the novasure. For a woman who did not have a novasure and hasn't had a period in over a year, they could consider the possibility of menopause because it happened naturally. But in your case, the novasure is what caused you to not have a period and that's not the same thing.
You didn't provide your age but I tthink that if you really want to know about your menopausal status then you need to go see your gyn for blood tests. I'm pretty sure that you'd be having some kind of symptoms from it if it was happening to you. But if you really need to know, go see your gyn and get some tests done.