"i was on the shot for a year. i spotted for months at a time which didn&#039;t seem like a good trade off for no period. i also experience mood swings that i couldn&#039;t seem to control. my acne got out of control and i had break outs in areas that i didn&#039;t normally have issues with. then to top it all off i gained about 15lbs while on this shot. to me the pro (convenience of getting one shot every three months) didn&#039;t out way the cons."