I woke up in the middle of the night with a sore neck. I feel like I have a pinched nerve on the top of my shoulder and it hurts to breath.?

Muscle strain. Wakiing up with a sore neck can often be due to sleeping in a uncomfortable posture which results in a muscle strain. For starters try applying ice for 4-5 minutes followed by warm application over the painful area of the neck. Also, tylenol (acetaminophen) or Ibuprofen could help.