The first week is pretty much a blur. I wasn't really tired because I was still pumped up on adrenalin, I think. Also, it's so nice to have your husband home the first week to help out with everything. Don't get used to that, though because he will go back to work soon. It's the second week that gets tough.
I guess my tip would be to let your husband and anyone who offers help as much as possible. And enjoy this special time...it flies by!