For back pain
do take ift physiotherapy
treatment of 15 min duration of 12 days regularly
regarding your bone mineral density is of osteopenia
level consume calcium calciferol rich foods such as milk egg green leafy vegetables curd guava custard apple and exposure to morn 6am - 8am sunlight or from 4, 30 pm - 5, 30 pm sunlight for about 20 min daily which indeed helps for bone strength.