What can you do about sciatia?

You can do several: What can you do is modify activities to minimize symptoms, take medication like ibuprophen or Naproxen if no contraindications, give it time as most get better, guided exercise/physical therapy, consider epidural steroid injections & modify your lifestyle in terms of weight control, avoiding smoking & exercising regularly to minimize the chance of recurrent problems. If no better, surgery may be.

Pinched Nerve: Sounds like you have a pinched nerve in your back. I would suggest seeing a pain/spine specialist to evaluate you further to evaluate what level and what can be done to treat you. There are interventional treatments besides medications and surgeries that might reduce or eliminate the pain altogether.