Ache in upper right chest, as well as up right side of neck and down right arm ending before elbow. Hurt more with breathing.

Muscle strain. Excessive strain of pectoralis major or minor muscles could cause these symptoms. Did you do some heavy lifting or pulling? Use heat & rest, & if symptoms worsen or continue see osteopath for diagnosis & physical therapist for treatment. You didn't reference a cough or shortness of breath. These would be symptoms of more serious problems. Absent neck pain, a pinched neck nerve is remote.

Related Questions

Stiffness on back left side of neck left arm weakness dull ache mid to left side of chest?

Need a physical exam. and imaging like X ray and MRI to figure out of you have disk disease in the neck that causes your symptoms. Call a pain specialist and make an appointment. Read more...