Is the mushroom in my gut or in my head?

Hello, I have some eating disorder but only with certain type of food.
I'm 190cm and 180lbs and today for example I've eaten 4 x 125g cheese, 200g pasta, 2 bananas, 200g steak, 200g bread. Yesterday I ate 250g pure beer yeast and the day before one coconut but only because I just had one in stock.
I crave for acid food, orange, lemon (unripened ones), mushrooms, beer yeast, cheese (spicy ones), and coconuts.

I told my doctor but he won't hear anything, he just shrugged off. So I wonder wether it is psychological or physiological.
Doesn't seem related to sugar content neither protein. Doesn't seem to be salt or saturated fat. Might be calcium...

I have lost my job and I am quite nervous these days. I am not hungry though I tend to overeat because I have nothing else to do. I feel in a dead end. I can't read, can't watch a movie, There's a lot of job everywhere but I can't choose any.

So I eat pasta, rice but I don't like it, it is not food. I eat 250g and I just feel like I've drunk too much water. I used to like red meat a lot but it doesn't do anything. And there's a lot of thing I don't regard as food anymore.
So I eat with great unsatisfaction.
Untill... I eat one bit of mushroom or coconut and feel a great satisfaction and then I start a cooking pot with 500g of mushroom in it. Though I wasn't hungry at the beginning. The more I eat of these food the more I feel like I'm going to die if I don't eat more! So I avoid to purchase them because I know I can't stop but I'm puzzled sometimes because
I think there might be a reason for my stomach to call for such strange food.
Thank you for sharing your opinion on that subject.