Often times, emotions cause physical pain. Many people have physical issues with no pain, many have compromised structural imbalances with no pain, but when emotions are involved the pain manifests or intensifies.
Release your emotions constantly especially the negative, grief, and trauma-related emotions.
An emotion is e-motion, energy in motion. If you are human, you have them.. they need to be in motion, stagnant emotions = imbalances and blockages = physical pain.