What do you do when you realize you slept on your neck wrong and when you wake up it hurts to turn it to one side?

What do you do when you realize you slept on your neck wrong and when you wake up it hurts to turn it to one side?
I think I need to locate a hot pack or something. And take some ibuprofen.
What do you do when you realize you slept on your neck wrong and when you wake up it hurts to turn it to one side?
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