How long did it take to conceive after your periods finally came back and regulated?? It took almost a year off birth control entirely for my periods to come back let alone become normal. My last shot was June 2014 and then started pills instead of another shot in September and then stopped everything January 2015. So it's been 1 year off birth control and 1.5 since depo. But now my cycles are normal I am hoping it only takes a couple tries.