my head keeps rolling off my neck

i woke up today and i kept preferring to walk into things than in a straight line.
i mean, i tried a straight line, but my heart just wasn't in it.
mind you, my head doesn't really feel too heavy or too light, it's just that when i lean it ever so slightly
it falls off and i have to pick it up and put it back on.
having never experienced such a thing, i called a relative and i'm told i will probably be few in a fine days.