I feel a pain in my neck every time i take a deep breath or burp.. what could be causing this?

? Pharyngitis: May be pharyngitis. You want to try tylenol (acetaminophen) and lozenges. If you don't get better, please see a doctor.

Many Possibilities: Depending on how long it's been going on, i would consider an evaluation by a spine specialist. Sometimes it could be a muscle imbalance, early onset arthritis or scoliosis. Also could be a pinched nerve/herniated disc. Either way it might be good to figure it out and get appropriate treatment.