My lower back and right shoulder have been in pain for years now. but every time it gets bad enough to see a doctor, they just tell me to stretch. ?

See rheumatology: At your age this is not a normal problem. It could be a sign of a class of diseases called seronegative spondyloarthropathies . If your back pain is worse with rest and improves with activity you should see a rheumatologist. Other possible causes include syringomyelia, prior injury to disk, spondyloepiphyseal dysphasia, hypermobility syndromes, among others. A rheum should be able to help diagn