I started having chest pain and neck pain but only on the right side of my neck and it hurts when i breath in deep?

Chest pain?: If you have chest pain on deep breath, it suggests pleurisy - inflammation of the outside lining of your lung (the "pleura") but that wouldn't explain neck pain. If the pain if primarily confined to your neck, an overstretched or injured muscle is more likely . A neck injury with nerve root traction could cause pain in both areas - at 17, you're too young for arthritis.