Hi Wharf Rat. I am also having lots of problems sleeping and are into day five. The itches and sweats are also still with me and at times its driving me crazy. I guess it all takes time for our body and brains to get use to the changes. Try not to dwell on the past too much at this stage and focus on the positive outlook in the future I find that its helping me move forward. You cant change the past but you can be in charge of the future.
Hang in there mate I am sure it will get easier.