Usually it is not painful to wear a birth control device. One condition in which a woman feels pain with the IUD is due to excessive mental stress. In the second case, the pain is obvious because the vagina is tight or the cervical opening is tight. Generally, if a woman has a loose vagina or a loose cervical opening, there is no pain during the IUD insertion process. The IUD or round birth control device can be placed for 15-20 years, while the T-shaped birth control device is valid for 5 years. So it is better for women to have an IUD placed if they want long-term birth control. If a woman is too nervous, she can also have the IUD placed by painless anesthesia. After the IUD is placed, the contraceptive effect is not 100%. If there is a delay in menstruation, it is also necessary to go to the hospital for a follow-up ultrasound or blood HCG measurement to prevent the occurrence of an unplanned pregnancy.