If you have mild scoliosis can you get backache and rib-ache when moving a certain way?

Likely unrelated: Mild scoliosis is a stable issue at 28 and in most unrelated to any symptoms at all. The only thing needed to get back pain is a back. Physical maneuvers or repetitive movements can trigger back pain in anyone at any time. A visit to a physician may be a good idea & training with a physical therapist may help you avoid such pain.