Hi guys, just wondering what a metallic/sour - almost poison tasting mouth that has come out of nowhere might be caused from? I’ve read it could be from anxiety but I haven’t been feeling anxious or worried about anything lately. Even if I drink water it tastes sour and weird. It’s been like this for about three days now and is worse as the day goes on. I woke up this morning thinking it had eased but now it’s awful again. I’ve also felt a bit nauseous the last few days as well and have had headaches. Definitely not pregnant and was tested for diabetes a few months ago so it’s not that, even though I have most of the symptoms for diabetes! Has anyone else experienced this for days and it’s turned out to be nothing?