Well, the tingling is some kind of message, but just guessing it's probably not serious. I can get tingles from resting on my side with my hand propped under your cheek, but as soon as I move around a minute it's gone. If it's not just the beginning sign of a tight muscle, it could also be emotionally based. I have had pain in my neck that I soon discovered was 100% unconscious thoughts and when I explored the pain went away.