Low Libido

I am 50 years old today. I have not had a period for a year now, for which I am thankful. Do the hormonal changes zero out your sex drive? Oh, I enjoy the closeness, and I don't mind going through the motions, but it would be nice to have some desire once. Is there something you can take to help this.
I've wondered about horny goat weed. Does anyone know if that works for women?

Any help would be appreciated.