Not to sound 'dramatic', but PLEASE don't EVER hesitate to call your Dr or the Reps! Especially since you are the first in the country to receive this new unit! That's what they are for! They certainly care about your welfare.... PLUS Since you are the first recipient, they are gonna want to know anything and everything from your standpoint as a patient!
I'm sorry you are experiencing this strange discomfort,...but am glad you knew to take the antihistamine to calm things down.
I hope you are keeping a journal on your experience with this. They undoubtedly will want to know every detail you have to share....ESPECIALLY anything that seems out of the 'norm'!
I hope you are feeling better!
Rae
As an afterthought as I had posted this, I wondered if it could perhaps have anything to do with any medications you might be weaning off of? I'm not sure what type of medication schedule you've been on, but if you've been on pain meds for quite awhile, is there a possibility it might have something to do with withdrawaling from any of these meds, or if there might be some sort of a hyperaesthesia factor going on (Also known as 'Rebound Pain')