Hi, I have had this nasty taste for over 2 years now and the last time I had it was when I was pregnant.
I also have a sore tongue and nasty slimy mouth and certain things taste nasty like tea, coke and chocolate just like when I was expecting.
I thought it was a leaky filling at first and have been spending a large portion of my life trying to get to the bottom of it.
Sorry I haven't got any answers but you not alone!
Annie x