Okay. Well I have a friend that is taking those shots for her back. She fell down and hurt her back. She has already tooken to series of them and is going back for her third one in two weeks. She can barely walk or do anything but sit all day. She is in a great deal of pain. Why would she be in pain if she got those shots? The doctors said it should start working. I mean her pain is worse then before she had the shots. Help please.