The pain you experience in your back may either be acute or chronic, depending on how it was sustained. Acute pain means that it lasts for a short time and is usually severe. Chronic pain means that it lasts generally three months or longer and it can either cause dull or severe persistent pain. The pain you experience is typically either rooted in your back muscles or the bones in your spine. If your pain is severe enough to hinder you from doing daily tasks, if it suddenly worsens, or if it has lasted longer than three months, then it is time to seek the help of a physical therapist.