Three and a half months ago I got the depo provera shot and didn't have my period until three weeks ago. This is my first time being on the shot. The issue I'm having is I've been bleeding very heavy for three weeks now and it's still going without letting up. I'm just not sure if this is normal or if I should go check in with my doctor. I'm almost 19 and have only been with one person not sure if that's necessary or not. Thanks!