First of all try to decrease smoking and then quit it. You know smoking causes cancer so avoid it.
Back pain most likely is not due to cancer. Further deatils of your pain character are needed to give you a diagnosis. Dont be afraid, delay in diagnosis and treatment is harmful.
Next Steps
Consult a pain specialist.
Health Tips
Follow these treatment guidelines to get relief.
1. Sit with straight back and change posture in between.
Do not hunch and feet should rest on floor while seated.
2. Take breaks in between work and walk.
3. Take rest when back pain is severe but a void total bed rest.
4. Do back strengthening and stretching exercises daily.
5. Take simple painkillers like paracetamol if pain is persistent.
6. Apply analgesic cream over back followed by warm fomentation.
7. Keep pillow behind your knees at bedtime.
7. Do not bend and lift weights.
8. If back pain is accompanied with radiating leg pain or tingling , numbness or weakness, consult doctor urgently.