If you are wearing the ring normally, it is more appropriate to do so 3-7 days after you have your period. If you need to release the ring after delivery, you should visit the hospital 42 days after delivery. If the reproductive tract recovers normally, the ring can be released. If you have a cesarean section, you can have the IUD released six months after the cesarean operation and 3-7 days after you have your period. The IUD is the simplest, most economical and convenient contraceptive method for women with the highest success rate, and it is reversible.