I previously did the depo shot and had the same experience, yet worse. My first shot was great. I didn't even have periods. My second shot, started spotting, then bleeding - every day. My doctor gave me estrogen to stop the bleeding and it just got worse. He upped the estrogen two more times to get it to stop. I was crying all the time, even at the Downy bear commercials. If it gets too bad, go to another doctor. You don't want to go through what I did. I was soaking my clothing when I'd sneeze. My doctor said the second shot I got must have "come from a bad batch" and that the manufacturers vary and the amount of hormones in each shot can vary. I don't know how to get "the right batch" but if your spotting gets worse I would demand something rather than be told to ignore it, or go to another doctor. You have to take your health into your own hands, which I've learned in my 48 years.