The chest contains many organs, like the heart, lungs with its pleural covering, esophagus, muscles, ribs, tendons, and nerves. They all can be the source of the pain felt in the chest.
Is this pain associated with any tenderness, in another meaning does it hurt you when you press on the place where you experience this pain or any area around? Is it increases when you are exposed to cold air? Is it associated with certain movements? If it is associated with any of these signs, it is probably a myo-skeletal pain.
The fact that you are working all the day makes Muscle strain and spasm is more likely to be considered..
Overexertion of the chest wall muscles or their inflammation as a part of viral infection like flu or cold results also in chest pain, the pain is usually aggravated with certain moves and is usually associated with tenderness over the affected muscles. Pain due to rib or chest wall bone disease is also another cause of chest pain. They are also tenderness over the affected areas.
In all of these conditions the chest pain is usually aggravated by taking deep breath and cough. Inflammation of the pleura covering the lung gives a sharp pain that is associated with cough and is more severe when taking deep breath.
If you have not been examined by your doctor after you experienced these symptoms, I advise you to visit him for proper management.
This answer does not substitute for direct medical consultation.
Dr. Safaa Mahmoud.
MB BCh, MSc Internal Medicine. MD Medical Oncology.
PhD Experimental Medicine and Biochemical Science.