Removing the IUD after three months will affect the lining of the uterus to some extent, but will not cause major damage to the uterus.
Before removing the IUD, the doctor will conduct an ultrasound examination to determine whether the position of the IUD is normal or not, so as to prevent greater damage to the uterus during the removal process. In addition, the removal of the IUD should be done when the lining of the uterus is at its thinnest about 3 to 7 days after the end of menstruation, which also prevents greater damage to the uterine lining.
However, the doctor is not able to observe the position of the IUD clearly, so there may still be mild damage to the lining of the uterus during the removal process, resulting in transient bleeding of the lining of the uterus after the IUD is removed, which is usually relatively minor and can be recovered on its own.
If a woman needs to remove the IUD to prepare for pregnancy, she needs to go to the hospital and do some tests before the removal to ensure that the process goes smoothly.