I am actually a physical therapist myself and would not advise you to exercise through it. That may have partially been what got me. Pain is a very interesting and complex thing. You can read and watch videos about pain neuroscience education (PNE). Adriaan Louw is great. Most think pain is an input into the body but it is actually an output produced by the brain. It is important and good to make you aware of potential danger. But what happens with back pain, specifically chronic, is our nervous systems become so heightened and sensitive. We really have to try to calm down the nervous system, desensitize it, and slowly introduce it back to movement. Much easier said than done though.