I thought about going to the womens health board for this one, but I don't know how many cp'ers are over there. I wondered if any of the ladies out there have had this experience. Since I've been on methadone, I've noticed I don't have my periods as often. I used to have them every four weeks like clockwork, but now I sometimes go three months without one. My sister is a nurse practitioner and she said this can happen on narcotics, but my doctor said no it doesn't. I am 43 years old, so it could be the start of menopause I guess, but I don't have any other symptoms of that. Just wondering if any of the ladies here have the same experience.