"i&#039;m 24 &amp; been on depo for 7 straight years. i got on it young so it wasn&#039;t to be used as a contraceptive but to help my very heavy periods. i bleed heavily  7 days straight, ridiculous cramps and migraines. i actually spotted for 3 months straight when i started it!! i was ready to call it quits when all of a sudden my periods stopped completely after! i was elated. no more cramps! i started to spot around the time for my next shot,  for a few years but as of now i never bleed. i may get light cramps for a day. i never experienced any weight gain or craziness from it. however, i do now suffer from depression and constant irritability... but my life and work is very stressful so i don&#039;t feel like it&#039;s the depo but it could be worsening it."