I can feel a heartbeat in my 12 soon to be 13 year old daughters stomach. if it helps she is 127.4 pounds and 5 foot 4 tall. her stomach also keeps gurgling. is this something to be concerned about. please help.

Aorta: Even though she is not very slender, you're most likely feeling the abdominal aorta which is the largest artery in the body. This isn't unusual, but if the aorta pulsation is very strong, a physician would check for an aneurysm and high blood pressure. Gurgling iof the intestinal tract isn't abnormal unless bloating and severe cramping occurs.