Anyone know what this could be?
I don't but I have had it on and off the last two months.
Yes! Apparently it's called dysgeusia and is a pregnancy symptom. It is driving me nuts! If you can stomach it, I've been finding sour or tart things helpful like lemonade,green apples, or sour candies. I know I shouldn't but somehow it seems like mountain dew slurpees help and it lingers in your mouth longer than a runnier drink! Hope it improves, I know how annoying it can be.