"it works very well as a birth control (one of the best besides an iud) &amp; is convenient because you only get the shot every 3 months. i got the shot for free from my health department, not sure of the cost under insurance or out of pocket. i&#039;m 19. in less than 3 months on depo i gained almost 10 pounds, i now have cystic acne on my face and back, and my hormones are entirely out of whack. i get angry over nothing very often, and i&#039;m extremely irritable. it causes bone density loss and it can take months to get your fertility back. i&#039;ve had random spotting and bleeding throughout the past 3 weeks and i don&#039;t know how much more of it i can take. do not get this birth control."