Thanks for your question on Healthcare Magic.
I can understand your concern.
Left sided throbbing chest and
shoulder pain are commonly seen with heart diseases.
So, in my opinion, you should immediately
consult doctor and get done blood pressure monitoring, ecg, 2d echo and
stress test (trade mill test) tools rule out cardiac diseases.
If all these 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. Apply warm water pad on affected areas. Avoid movements causing pain.
Don't worry, you will be alright but first rule out heart diseases.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.