hi if taken within 5 days of your last period straight away but have you looked up about the side effects of depo shot/provera if i was you give it a good read just google depo provera side effects its all there reason you may not want to stay on it after reading about the side effects. good luck
how long does it take for depo-provera to take full effect? . i did ask the question but was lead to everywhere but the answer how does that help anyone who needs the true answer? i did receive my injection after my last menstrual cycle how would i figure out when i will be protected with the smallest chance of getting pregnant. it has been 22 years since i was last on birth control but we just can't take the chance of my getting pregnant at this time in our lives.