Y do i feel a heart beat n my stomach?

Heart beat in stomac: this may be abdominal aortic aneurysm or mass in your belly. Ask for an ultrasound of your belly or ask for a CT of your belly.

Abdominal Aorta: A pulsating beat in your abdominal area is due to your abdominal aorta. A pulse-like feeling can normally be felt in thin people with small bellies. An unlikely cause (more commonly seen in older people) is AAA (abdominal aortic aneurysm), where there is dilation of your abdominal aorta. If you have other symptoms, than a visit to the cardiologist will help and give you reassurance.