 [ Symptoms ] on depo 6 months switch to pill 1st month had a period stopped taking pill now no period negative for pregnancy i have been on depo on and off for years usually it takes about six months after last injection for my periods to start again that would be about this time i took the pill for three weeks then during placebo week had a period took for another week and a half and stopped and have not had a period since just light spotting pregnancy tests are negative when can i conceive and why are not i having a period [ Disease ] hi as over the years you have been mixing them up it could be that its now caught up with you and your hormones i think it may take sometime for things to get back to what you would call a normal cycle its only when you get back to normal that a pregnancy may happen just a waiting game good luck