Hi and welcome to the Chiari forum.
I am so sorry u had that experience post op....makes the whole thing a little tainted, but this can happen if u have a CSF leak...so do pay attention to how u feel when u change positions....
I was in the hospital 5 days...and I had a reaction to the morphine....so I know a little of what u went thru...
The numbness is normal at this point, it takes time for that to go away.....
as for post op things u should do and not do we do have a list in the Health Pages -
http://www.medhelp.org/health_pages/list?cid=186
U should be able to walk around...no bending or lifting....nor pushing or pulling, like a vacuum ....
Do not wash ur hair often as it dries it will pull on the scar and may pull open....we were also told to use a baby shampoo.....
U should in addition to walking....do exercises for ur neck...it is slow but u need to move so the muscles do not get tight and this helps avoid scar tissue....u will want to use heat for 15 mins b4...and after to help relax the muscles....if u have swelling use ice again 15 mins at a time...
Rest, rest and then rest some more...keep on ur schedule for ur pain meds even if u have to wake during the night to take them...u must keep ahead of the pain other wise the meds may not help.