You are definitely not alone! This happens to me all the time. You'll be sitting there, watching a movie, take a sip of Water or whatever and then the gurgles! It's sooooooo embarrassing. My problem was that my band was too tight. Just had a recently had all the saline taken out of my band because I found out I had a bad slippage... so right now I don't have any Fluid in my band
You're definitely not alone!