I have had this taste aswel.Was as if i had sucked on a penny or sprayed hairspray in my mouth. No matter how much i drank or ate it wouldnt budge, Its waring off slowly as i now only have a very mild taste of it. Maybe its going because i literally brush my teeth constantly & use mouthwash & chewing gum to try blank the awful taste. Hope i dissapears for you soon! :) x
I actually found out that it's another symptom just like morning sickness. I forgot the term but sour citrus stuff stops it for a little while.