I am a 47 year old healthy female. Why is it that whenever I lay flat on my back weird noises come out of me?

Not Medical Advice: You might experienced stomach rumbling cause by the movement of gas, fluid, broken down particles of food & fermenting bacteria in stomach.

Tags: particlesbacteriagasstomach 
Monday, February 06 2012
Source: http://health.msn.com/health-topics/digestive-health/stomach-noise