bben,
In general day 2 & 3 are the most difficult physically, but I don't think
there's any real "normal."
In my experience, I've had a couple day 1's where I've just felt maybe some hot/cold sensations,
pretty sleepy but no sleep, and a slight feeling of impending doom.
day 2 and day 3 are usually the hardest, but I'm kind of baby about w/d..(please don't tell anybody).
Your dose of hydro isn't too high..and you're not feeling any difficult symptoms yet..that's great!
Do a happy dance! This could end up being a cake walk for you. If so, I'll be more than jealous!
Hope things stay just a little sleepy for you.

token