Every day if I am sitting here at the computer. Very, very mild heartburn. Well....no, other than that I can taste it. They are slightly discoloured anyway because I used to smoke, so I probably wouldn't notice. Yes, and then I burp biley froth. Not that I know of. A few weeks ago I was sitting watching TV and I got an urge to cough....after I had coughed my mouth filled with bile and stomach acid, I remember the taste was horrible and I had to run and wash it out. Then for the next half an hour I coughed up more bile, but it didn't happen again. I might have too much magnesium in my diet, do you think that could be a factor?