"okay ladies! do not get this shot! i was 15 when i first got the shot. i was on it for a yr. and now i have been trying to conceive for 9 years and no luck i am now 25 years old and still i have 0 period! i want to have a baby so badly and i cannot due to the fact i jacked up my hormones with this shot. but it is very effective at preventing pregnancy. but if you plan on having children dont get this shot!!!"