Welcome to HealthcareMagic forum
It is the matter of worry only if you have any associated symptoms even mildest like short breath on exertion, pain behind sternum
, discomfort etc ever. louder hb can be due to physiological causes also like over exercise, stress
. wait for 2 3 days and visit the physician only if the problem persists. there is no big matter of worry so plz relax.
I hope I answered your query. Wish you good health.