Annie ! That's terrific. I am so glad to know how insignificant (without symptomatic changes) your menopause was !
I do think that you should go to a gynecologist, though, just to check everything out. From what I understand, losing one's period can mean many other things, too . That's why I was a bit freaked out when I started to skip, I thought the worst and ran to a doctor.Especially in my early 40s when I didn't really think it'd be peri-menopause.It was, though.
I was really worried that he'd want me to take HRT because, you know, the way it's advertised , you tend to think that everyone who menopauses has to take it. Well, I didn't have to. I also am a vegetarian (I eat cheese too !

). I don't think it's the soy products so much that helps as the not consuming the meat which has hormones in it. I think that by not eating meat, we may prevent our hormones from being further imbalanced.
I have a friend just like you who NEVER went to a doctor when she changed over and she said she didn't have any symptoms except stopped menstruating !
Best wishes !