Thanks for your question on Healthcare Magic.
I can understand your concern.
Sudden onset left chest pain,
shoulder pain and headache should always be evaluated for
hypertension and other heart diseases.
So immediately
consult Cardiologist and get done blood pressure monitoring, ecg, 2d echo and stress test (trade mill test).
You may need antihypertensive and other cardiac supportive drugs on the basis of reports.
If all these reports are normal then no need to worry for heart diseases.
Sometimes
musculoskeletal pain can also cause similar symptoms.
So take simple painkiller like
paracetamol or ibuprofen.
Don't worry, you will be alright with all these.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.