<s>[INST] Over the last two days Ive had chest pains that arent quite severe, but are pretty painful.  Along with these chest pains my left arm has been in the same pain.  I am 21, and would just like to know whats wrong and if I need to go into the doctor [/INST] Thanks for your question on Chat Doctor. I can understand your concern. Yes, you should definitely consult doctor and rule out heart diseases. Left sided chest pain with left arm pain are commonly seen with heart diseases. So get done blood pressure monitoring, ECG and 2d echo. If all these are normal then no need to worry about heart diseases. Sometimes musculoskeletal pain can cause similar symptoms. So take painkiller and muscle relaxant Chat Doctor.  Apply warm water pad on affected areas. Avoid movements causing pain. Don't worry, you will be alright with all these 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. </s>