I got that heavy white coating the morning on my tongue after the dumpling fiasco and my tongue, mouth and salivary glands hurt like crazy. Have you tried the baking soda rinse at least 4 times a day? I was using that but it wasn't helping a lot at first, then I started holding the last mouthful of rinse in my mouth for about 10-15 minutes just to see if it helped to soak it and it seemed to clear it up. I feel sorry for you, it was extremely painful, especially brushing my tongue with toothpaste hurt like crazy . I hope yours clears up, it's really no picnic :(