I can't move my neck to the left or down. Very stiff. What could be wrong?

My left neck muscle between my neck and shoulder is hard as a rock, while the right side is normal/bit plush.

Last night I realized I couldn't move my head to the left. I had dinner, ate some seafood, went dancing for a few minutes, and then that was it. I carried a small purse on my left shoulder that had a camera in it, an iPhone and some cash. Nothing out of the norm.

I slept, and today I feel the muscle is hard, and I can't move my head down now. I feel like I'm pulling something that's tight. It hurts when I move it toward the left.

What are your thoughts? I don't have a fever. I'm normally an active/healthy person. I don't have healthy insurance and I'm a broke college student; I'm so scared.

U'll be fine this happened to me i had slept the wrong way and my neck was as stiff as a rock. I went to the doctor for it but he said there's nothing to worry about its just a stiff neck it may take a few days or a few weeks to feel better. Try taking Advil it helped me a lot or any pain reliever that works for you. Also try to massage the muscle if it doesn't hurt when you touch it. Just try not to do anything to strain it and don't carry any thing heavy on that side.feel better and hope this helped^-^

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