"i have been on the depo shot since i was around 12 and i am now almost 20, i love it! i switched because i always forgot to take my pill and i have a very heavy period with unbearable cramps. the only time i have a problem is if i forget to go in at the end of the 3 months because then my body usually gets off track and i start to have spotting. but besides that i usually don&#039;t have a period or any of the side effect"