Nothing wrong with you. Just calm down. Its your poor postural habits due to which you give excessive load over your lumbar vertebrae. You are young only 26 year old .you have poor posture
habits due which your back muscle are become weak. Pain
travel in leg is a sign of radiculopathy .its means your lumber vertebral disc may be compressed. Doctor suggest for MRI to evaluate the level of compression and severity of compression. On the basis of MRI report treatment plan is suggested. As per physiotherapy
advice I suggest you to do hot fomentation at home and do MacKenzie exercise. But first consultant to orthopaedic physician for treatment plan.