Plus, given your age and remembering that ovarian hormone decline can start as early as
the mid-thirtes. Remember, too, that
the uterus, and if I remember correctly,
the cervix, too, give off a certain amount of hormones which could also affect the lining of the
vagina.
Ovaries in general will keep producing estradiol, E2, (the estrogen produced by the ovaries) although in a much smaller amount even after menopause up until around age 72 or so...