It is possible to have a pregnancy with the ring, so if you are pregnant with the ring, it is recommended to perform an ultrasound examination at about 40 days to understand the size of the gestational sac, the location of the implantation and the position of the ring, and to regularly monitor the growth and development of the fetus. If the birth control ring is very close to the gestational sac, it will affect the development of the fetus, in which case the child cannot be wanted. As the child gets older after pregnancy, the position of the birth control ring can shift and may fall off on its own, or it may get stuck on the placenta. Therefore, you need to go to the hospital for regular checkups to observe the position of the birth control ring and determine whether it has an effect on the fetus.