shivering...

i've been feeling cold all day
and shivering
my hands under the blanket don't get warm
the slightest body movement brings its lot of tremor spreading from head to toe
there have been so many today that there's like a gentle vibration inside
very pleasant around my heart and all over my tommy

is my body temperature dropping from outside in?
is my body temperature rising from frozen creating ripples, inside out?

does anyone know what shivering might represent symbolically (not medically...) ?