When does obstetrics and gynecology consultation begin?

It would be correct to go to pediatrics when you are young.

And at what age should I go to the gynecology and obstetrics department when there are health issues?

Can I receive treatment at the gynecology department even if it is not related to pregnancy or childbirth?

And when you get older and go through menopause, the issues are also treated at the gynecology department. Up to what point is this?

I'm not sure about that boundary.