Good afternoon I just received my fifth treatment have not had any side effects yet but during treatment today I had a sensation in the back of my neck when the treatment activated in the back right position, I was wondering if anyone has had similar experience with radiation felt kind of numbing and still have a bit of pressure in the same spot it was weird how it started just as machine kicked in I asked technician about it and she said was prob just me being tense machine could not cause it, thanks in advance for any input...ken