Thanks for your question, and sorry to hear about your persistent pain. There are many different reasons that a person can have back pain, and it is quite common for many people to have it. Unfortunately, it is not common for 16 year old people most of the time, and so that means that you should speak with your doctor
about your complaint. The type of pain that you are experiencing can provide valuable information. Sharp, stabbing pain that comes repeatedly in the same area can be due to a problem with the nerve, and is often referred to as neurogenic pain. Cramping, colicky pain that comes and goes over time is often related to a structure that has a lumen, and moves things through it (such as the gut). The type of pain that you seem to be describing does appear to be similar to the type of pain that a person can feel when there is a problem with the muscle. This sort of pain can respond to different therapies, but it is important to know what is causing the pain before you begin to treat something that has been a problem for a long time. Please speak with your doctor.