[header] How to fix bad sciatic pain [title] Rest your back. [step] For the first day or two following the onset of your sciatic pain, you should feel free to take it easy. This should grant you some relief from the pain, allowing your muscles to relax and avoiding agitating your sciatic nerve with too much activity. 
However, you should not remain in bed for longer than a day or two. Prolonged inactivity will weaken the muscles responsible for supporting the bones in your back making it easier to further irritate your sciatic nerve, and leading to increased pain over time.