Hi,
The shooting pain to the head is probably caused by some nerve being pinched.
The left chest pain that comes on with 'weird' postures, coughing etc, and since it is increasing in intensity, needs further investigation. Although it may eventually turn out to be merely a muscle catch or some such benign condition, still it needs testing.
Pl consult a doctor, and get a chest xray taken.
Best of luck.
Hello,
The type of pain you describe is definitely a cause of concern. And with the history of smoking it being a cancer would have to be ruled out. Lung cancer could present as chest pain without any other symptoms. Having said that it could also be related to some underlying heart condition or it could be a muscle pull. But to be able to diagnose it you need to get yourself evaluated by a physician and get all the relevant investigations including some blood tests, chest radigraph, ECG done at the earliest.