1. Yep, you are most likely still healing it took months for my sleep cycle to normalize - feel fortunate to have full nights of sleep at this point
2. Again, most likely your mind healing and getting used to not being constantly depressed from alchohol all the time. In a sense your mind is "waking back up"
3. Could very well be - run with it and try to create something
4. Yep, drinking more will make you go to the bathroom more ;-) Many of us lived in a state of constant dehydration when we drank.
If any of the above seem to be causing serious problems, seeing a doctor is never a bad idea of course - but yep - 5 weeks s in you are bound to still be dealing with multiple issues. Think of how far you've come though!