Yes large peice of food through esophagus
may hurt. Since you have taken chicken, the bone piece may have scratched the wall of food pipe.
The pain in right shoulder might be a referred pain
Sometimes when throat hurts it would cause spasm and it will make difficult to swallow.
Since you havnt given any symptoms of fever, cough etc it is easier to rule out sore throat
The constant pain may be due to some bone particle still sticking to the esophagus or some injury
due to it.
It is better to get a endoscopy
to identify it.
I dont think your allergies has anything to do with it, since it is usually accompanied by many other symptoms.