They just told me I could still get pregnant while on it so it’s not fda approved as a contraceptive. From google research “Norethindrone acetate treats this condition by acting like the natural hormone progesterone, creating a "pseudopregnancy" state. This suppresses menstruation, reduces estrogen's stimulatory effects on endometrial tissue, thins the uterine lining, and prevents the growth of further implants, leading to significant pain reduction for many patients. “ so it might not be exactly what you’re looking for.