Depo-Provera
"Sooo, I only had the shot once I first got it on the 2nd day of my period at the end of June. My period continued regularly then the whole month of July I didn't get a period then at the end of August I started bleeding it's now the beginning of September and I'm still bleeding (3weeks) I'm due to go back sept 15 to get the shot but  I'm kinda reconsidering."