Welcome to HCM
We understand your concerns
From the description of the symptoms you gave, a diagnosis proper may not be possible. For any chest related symptoms, a detailed investigation is normally done now a days because of its awareness among population. But you don't worry.
I feel this as simply muscular pain
because you did not mention any other symptoms which are normally associated with angina
or heart trouble. Consult a physician for clarification.
Get well soon.