The cervical cap is made of soft rubber and keeps the sperm out of the uterus. Its shape resembles a sailor's cap or a thimble.
The cap is similar to the diaphragm, but much smaller in diameter. Due to this, it is placed directly onto the cervix and suctions to it. Therefore, it is very important to choose the correct size of the contraceptive together with a doctor.
The cap can be placed in the vagina in advance. Among all the barrier methods of birth control, it can remain inside the longest - up to 48 hours. It must not be removed earlier than 6 hours after sexual intercourse, and it is better to combine it with a spermicide.
The effectiveness of the cap depends on whether it is installed correctly and whether the woman has given birth naturally before.
In women who have not given birth, it is 86% effective, while in those who have had a vaginal delivery, it is 71% effective.
For those who have given birth vaginally, the cap is less reliable (despite its ability to stick to the cervix) than the diaphragm and even the calendar method.
Doctors advise combining this contraceptive with a condom or the pull-out method.
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