My wife age 22 has been facing continuous menstruation from previous 9 days + and there is lower back pain also. is it normal or there any problem as the menstruation hasn't stooped. Previously it would have been only for 4 to 5 days. there is no any previous medical record. But some time the menstruation have been in 2 months or so.if it would have been in 2 months it would have excessive pain.