Hi
To try to answer your questions:
Steroids will induce insomnia. Very common side effect, and it's no fun. That should go away after you are done with steroids. You might ask your doctor if you can take any sleeping aids. It's worth a shot. I was miserable for a week after my GK because of the steroids and not sleeping. My sympathies.
Bobble Head, or Wonky Head as we sometimes call it around here is caused, as you probably know, by your vestibular nerve being compromised. Have you read this about your balance system? Good information, although no cures except time. Healing for that is very individual. Just depends on how long your brain needs to figure out that things are different and it has to get all it's cues from your good vestibular nerve, who is doing all the work now. Poor thing is trying soooo hard!
http://www.hearinglosshelp.com/articles/balancesystem.htmThe pain in the leg is a mystery to me. Perhaps you pinched a nerve somehow. Stretching might help. Lay on your back and bring your legs up to your chest...you know gently stretch out your spine. Gently...don't want to be the cause of any more problems for you!
Or, better yet...ask the doctor!
Hope you feel better soon.
Sue in Vancouver USA