You do not say how long you have had the mirena. Many women don t have menses. Like you, they like that very much. Some physicians described this IUD as birth-control that you will hate for three to six months. then love for years. If it has been more than six months and you are experiencing these difficulties and there is no evidence of infection then I think it may be time to consider a different method of contraception. The Mirena IUD is not for everyone. The spotting should gradually get lighter and lighter and then go away. The cervical pain that you were describing his last commom. If it is different from cramping which may be associated the bleeding then maybe it s some type of sensitivity to the string which would require removal. Another possibility is that the IUD itself may be too low in the uterus and the bottom of it is poking into the cervix. An ultrasound should be able to locate the IUD and make sure it is in the correct position. Only you can decide if the unwanted effects outweigh the benefits. None of the problems you re having indicate the IUD is not working. Unfortunately, no method of birth control is perfect however there are many alternatives to consider.