Sorry, did not mean to confuse you! I do know that in TCM (Traditional Chinese Medicine) the organs are not looked at as seperate entities but as an interconnected whole. Here is an informative link:
This is an Ayurvedic chart. I think that it is much more descriptive than the Chinese. The Chinese also use indicators such as tongue coating(moss), color of tongue and of moss, thickness and width, and shape. I would think that some of these indicators could only be read and diagnosed with comparison and experience.
As you described your recent lifestyle, I think that "unabsorbed nutrients" could be right on. I have observed the same tongue signs in myself, at times.
I am by no means an expert. I am searching, like you. I think that the more tools we have available, the better. :)