I just found out that my B12 is extremely low and I have to start taking B12 shots. I have tried to find information on the web but all I can find is pernicious anemia. Are they one and the same? Does anyone here know if these are shots you can give yourself or if I will have to go in to get them? I have to have one a week for 4 weeks and then one a month for an unknown length of time. Any info would be apprieciated.