A. Yes it is an effective method when used as directed. It can be inserted up to 2 hours before intercourse, so it does not alter the mood set when ready for sex as much as other similar methods. It is also less expensive per month than the pill. This method is not for everyone. Some females do not like the preperation steps. As an HIV protection, condoms should be used with a diaphragm & spermicide when you are not with the same partner who has been tested for HIV. You must be properly "fitted" by a health care professional. A prescription to buy one is required. A diaphragm needs to be replaced about every two years. Be very careful to not damage it in any way.