This pain is due to pain in the muscles of cervical & lumbar spine as you started working with weak muscles and taking a lot of stress.
Next Steps
Consult a physiotherapist.. Ultrasonic therapy +IFT +Heating therapy +some strengthening as well as stretching exercises will be helpful for sure.
Health Tips
At home.. Rest +hot water fomentation +pain killer gel +no long sitting/standing /travelling /driving /computer work /table work +no cold exposure +no manual exertions +no weight lifting +no jerks +no forward bending +correct posture.