###Human: What is causing back pain in me? ###Assistant: Hello. Thank you for providing a brief history. As per me, it looks like the paraspinal muscles are getting over excited to safeguard the spine and the ligaments of the intervertebral joints are also getting over excited due to the weight lifting. There should be a proper guiding before doing any kind of heavy weight lifting and also there should be enough of the core muscles strength before doing one. This pain which is on and off is a red signal for the spinal column. Taking up and MRI should be really worth rather taking up an X-ray. As this pain is only while doing movements I will highly recommend to take up the MRI and get back with the reports. Gym. MRI. Sacroiliitis. Degenerative disc disease. Stop the gym for a week.