Exercises will only take care of the problem. Try Yoga to begin with. The pains are due to stiffness and overwork of muscles which are feeling weak due to your domestic activities and mobile use. IMHO, all such pains secondary to lifestyle get labelled as sero negative arthritis.
Next Steps
your require to be assessed professionally and a program of rehabilitation is required which includes identify risk factors in daily life and appropriate exercises.
Health Tips
We can do a teleconsultation if you want.