Doctor Answers (5) on Body pain
Start hot water fomentation ASAP on the lower back
Give small sessions of rest in between the working hours
Try to change positions every 10-15 mins.
Give your body a small walk session every half hour.
1. start strengthening exercises for back and neck muscles
2.posture correction exercises
3.stretching exercises for your back and neck muscles.
4. Follow ergonomics(avoid bending activities avoid lifting weights, chair with back support and neck support) and work station modification .
The things which come to.my mind with your limited description maybe the following
Stress related disorder
Please consult a local Orthopaedic doctor urgently to get it sorted