First of all do ice pack or hot fermentation for 10-15 at pain area. Then do some exercises for back.static back, core strengthening, back stretching. If pain is more use pain relieving spray or ointment like volini gel.also do some modifications in your work area.
Next Steps
always use pillow under your back.
avoid long sitting . take a break inbetween your work.avoid like lifting heavy weight or forward bending.
Health Tips
if you do online consultation with physiotherapist it will be helpful for you to get better results and treatment.use practo app consultation with physiotherapist.