It doesn't hurt at all, just feels very uncomfortable. I have to keep cracking my neck almost constantly to relieve the pain. I don't know anything that would have caused this, but has been going on for at least a month. It almost feels like my neck is off center.
It's possible that you could have slept on it wrong it doesn't take long to do that maybe in your sleep sounds like you may have pulled it not knowing you did it antinflamitory might help you also may get something over the counter that may help you probably might also get the dr to give you ibephrofen precription might also be a way to conquer this You might need to go to the dr.