s advice, you need to be in some sort of physical therapy to strenghten and improve
flexibility of muscles
related to your spine. Also, if your accident was fairly recent, you need to rest a lot, so not being able to get out of bed is your body trying to tell you something. You also need to be on some sort of medicine, either pain killers or antispasmodics, to help control the discomfort you are experiencing in your back, since the shots are not enough.