Your periods may be longer or heavier than they have been in the past. If you use the injectable for over 9-12 months, you may stop having periods, even though you are not pregnant. These changes are not harmful to your health. Your weight may increase slightly, or you may have headaches. If you have any of these side effects and they bother you, return to the health facility.
Most side effects go away within the first few injections.
Warning signs Come back to the health facility or go to a hospital at once if you have either of the warning signs listed below. Be sure to tell the health care provider that you are using the injectable for contraception. You have regular monthly periods for a while and then skip one or more periods, and you think you are pregnant. You gain a lot of unwanted weight. You want information about, or want to start using, another family planning method.