I'm day 3 too buddy and I know the feeling. It does get better significantly each day though. I've been having some awful vivid night terrors the past few nights but I'm sure they too will subside.
We can do this, drinking again will only bring back that pain with a vengeance afterwards, you gotta convince yourself it's not worth the short term 'gain' to drink, well that's what I'm trying anyway!
Stay strong
P.s Flea. Last time I detoxed I was prescribed some sleeping meds and Valium for a very short period and they really did help getting over that initial hump for the first few days/nights. This time I'm just sticking it out, off this week anyway so it's not a big concern if I'm especially tired tomorrow, least ill be sober.
Take care