Is it common for primary ovarian insufficiency to develop postpartum?

Early menopause: Premature ovarian failure can occur at any age, but it is unusual immediately following pregnancy. Regular menses suggest ovulation and a healthy ovary, but there are many causes of lack of menses after having a baby. Included considerations are breastfeeding, polycystic ovaries (estrogen is produced, but no ovulation), another pregnancy! pituitary failure (sheehan's syndrome) is a rare cause.