Got my birth control shot same day my period started.

Amarisa • VT Original. 802. I am who I am. And sometimes even I don't like me.
Hello so I was wondering how long after should my period stop. It's lightened it up and I only bleed a little bit. But I'm still bleeding. And I started the shot on 8/23/16. So yeah I used to be on the shot and stopped it for a while. But obviously am on it again. But I was just wondering is it normal?