Pregnancy cannot occur if an egg is not present for the male's sperm to fertilize. Depo-Provera usually causes menstrual periods to be very irregular. You may spot or bleed off and on all month or not have any bleeding at all.
Some women gain weight.
To avoid weight gain, watch your calories and exercise. You must return every 12 weeks to the clinic to get your injection. If you experience one or more of the following danger signs, contact your doctor or emergency provider as soon as possible. The inclusion of links from this site does not imply endorsement by the Department for Public Health. The Department makes no endorsement, express or implied, of any links to or from this site, nor is it responsible for the content or activities of any linked sites.