Depo Provera! Just a question…

Hey! I am currently on my third day of my period, and today got my Depo-Provera shot for the first time.

This is my first time on the shot, and I’m wondering if it will stop my current period? I know from what my doctor said, my period will go away for future instances, but I was more wondering about the current period I’m on now. I tried Googling it; nothing was there.