Diaphragms come with instructions and a doctor or nurse will show you how to put it in. The different types of diaphragm are all used in a similar way.
With clean hands, put a small amount of spermicide on each side of the diaphragm (approximately two 2cm strips). Some women find that putting a little spermicide on the rim makes the diaphragm easier to put in.
Put your index finger on top of the diaphragm and squeeze it between your thumb and other fingers. Slide the diaphragm into your vagina upwards and backwards. This should ensure that the diaphragm covers your cervix.
Always check that your cervix is covered. It feels like the end of your nose. If your cervix is not covered, take the diaphragm out by hooking your finger under the rim or loop (if there is one) and pulling downwards and try again.
Some women squat while they put their diaphragm in. Others lie down or stand with one foot up on a chair. You will need to find out which position is easiest for you.