It's a false assumption that could change your life. Not wanting a baby at this point in your relationship is only one of many reasons to use an effective contraceptive. Together, you should discuss your plans for the future, the birth control methods available to you, and the risks and benefits of each. Generally, spermicides must be placed in the vagina one hour before intercourse to be effective, but the products can vary, so be sure to read the directions carefully. They also can be used in conjunction with a barrier method, such as a condom.
Intrauterine devices are small plastic devices that a health care provider places in the uterus.
IUDs work by preventing implantation. Once in place, they are good for anywhere from one year to eight, depending on the type of IUD you choose. Surgical sterilization may be an option for those who are absolutely sure they don't want more children. Although it is sometimes possible to reverse surgical sterilization, the procedure should be considered permanent. Consider your lifestyle and habits.