Even if one ovary is damaged, the other one usually continues to provide enough estrogen for most women to wait many years to enter menopause
. Nevertheless, a small percentage of women do go into menopause early
(before age 40 by definition).
When you go to see your doctor, ask to have a blood test for FSH. Follicle Stimulating Hormone starts to rise as menopause comes closer. Also ask to have a blood test for estradiol and testosterone.