I just came down with sciatica. Any advice on what I should do?

I've been troubled by that from sitting too long when I'm working. Two things that really help. A good Chiropractor and a special cushion I bought from Amazon for sciatica problems and I haven't been bothered by it since. I was taking some pills that helped a lot but haven't needed them since. See a Chiropractor and he/she will show you some exercises that help along with their treatment. Pills aren't the answer. Trust me, I went all through this and I feel great now.

See a Doctor and don't lift any heavy until you do. 

Oh man...My sympathy to you.

My friend has it. I've been helping him out here and there.  One thing he does is stretches, avoid lifting and unnecessary bending, and walking.