Talk to your doctor about testing your hormones, if its high, its positive for the pcos, it is treatable if you take the antidiatbets medication to shrink the small cysts
and make them go away. the back pain will be gone but will have to keep up with the diet and exercise. As women get older, our bodies change alot, we have to keep up with our body otherwise it will be out of control. Talk to you doctor soon as possible to test for pcos, glucose, anything else that might be related to it?