Dull pain from front to back on right hand side of upper chest?

It could be from a variety of causes.

It could be from the muscles of the chest or a problem with the neck or shoulder.

It could be a problem with the lung including pneumonia, a partial collapse (pneumothorax), or a blood clot (pulmonary embolis)

It could be gall bladder or liver problems.

It could be an unusual symptom of heart problems.

If you are having dizziness, heart palpitations, fever, cough, shortness of breath, nausea, or are all sweaty then you should call your doctor or go to the emergency room immediately.