How can I tell if my heart is having problems, or if I just pulled a muscle near it thst causing the consistant pain during the evening hiours?

Need to assess risk. Assessing your cardiovascular risk is a complex process based on integrating several pieces of information. Age, sex, family history, smoking history, several other conditions and more. These and more factors are all put together to make a clinical risk assessment. Talk to your doctor :).
See below. If it is tender to the touch , or is made worse by arm movement, it is probably muscular and not heart.