What’s wrong with being able to feel the tail filaments of a manzanita?

The generic name of Mannitol is Levonorgestrel IUD. Under normal circumstances, it is not possible to feel the tail filament of the Levonorgestrel IUD, if you feel the tail filament of the Levonorgestrel IUD, it may be that the tail filament is too long or that the IUD has fallen off.
The levonorgestrel IUD is a type of birth control ring with a tail filament that is mainly used for contraception. If you can feel the tail wire of the levonorgestrel IUD by hand, it may be due to the long tail wire itself.
If the IUD has not been touched before, but has been touched recently, it is possible that the IUD has fallen off, because the levonorgestrel IUD is a foreign body in the body, which will cause the uterus to contract, which may cause the IUD to move downward in position. At this time the tail filament left at the cervical opening becomes longer and can be felt.
It is recommended that regular reviews be conducted after the IUD is placed, and if the position of the IUD changes, the IUD should be replaced in a timely manner so as not to affect the contraceptive effect.