"i&#039;ve been taking depo-provera since may 21, 2012. i haven&#039;t had a period since but very light spotting from time to time. this my 3rd year on birth control and after my last shot on july 21 i&#039;ve been bleeding uncontrollably. i don&#039;t know what&#039;s wrong but its literally making me feel sick. light headed due to low iron. i don&#039;t know if i should stay on it or not."