Hey there hungry E, I'm actually doing pretty darn good. My first three days SUCKED. It's really hold on time. If you can, try and take as many hot showers or baths as possible. My BP spiked and I had really bad RLS and the shits and the rest of everything else that comes along with those WDs.
All I can tell you is try and drink as much water as you can and sit in the sun if possible and baths...lots of baths. Hot water and sunlight were the two things that made any difference for me. After 72 hours, the physical aspects tail off and then you can start to decide if you're going to stay clean (I did) or if you're not ready. Even if you're not ready to stay clean, stick around these forums. There's a lot of really good sobriety on here.
And when you are able, check out a meeting (NA, AA whatever is close) there are lots around and those people know what you are going through as well. Just hang in there and know that you can handle the next 72 hours. It's going to hurt, but the pain is temporary.