Thanks for the question, and sorry for the inconvenience. Of course, it is important to discuss this sort of thing with the provider who gave you the depo shot, to make sure that there is nothing seriously wrong. Spotting can be a symptom of other causes of bleeding
as well, some of which can be serious. While all of that is true, it is also true that the shot itself can affect your normal menstrual cycle and can be the whole cause of your continued complaints and symptoms. Usually, the female menstrual cycle is a well controlled pattern that prepares the body for pregnancy. When a pregnancy fails to take hold, the cycle repeats itself--after menstruation. The depo, and other hormonal birth controls, disrupt this pattern to prevent pregnancy. There are also other effects, some of which you are noticing now. While these changes may resolve in some people over a period of time, it is important to be in contact with your doctor
to make sure that you are within the appropriate time period and that there is not another cause for your symptoms. Your doctor may be able to reassure you even via a phone call, so please speak with your doctor.