Im a 16 year old female and when i lie down i can feel/ see my heartbeat in my stomach! i have no other symptoms, is this normal?

Normal in normal kid: Normal, slim teens can see their pulse in their stomach areas when lying down, and they can feel it there too. If there are other reasons a teen is worried that she is not a normal teen, she can go see her doctor. Otherwise, she can just ask her pediatrician about the stomach pulse beat during her annual check-up. Teens should see their doctors annually for an exam and any missing vaccinations.