your post made me smile, not because I am smiling AT you but because your experience reflect nearly 100 percent what happened to me after approximately the same number of flushes.
Like you I had the feeling of going "backward" through all my diseases I had in life, through all of my experiences, through all my traumas - however in a considerably accelerated speed. Like you I experienced a tremdously increased appetite for a certain period of time and I also lost some weight.
I can only guess that you had a major breakthrough with this flush no. 13. This can happen. And it might also be quite possible that another breakthrough will occur as your health will further progress into an even better state.
I have no words telling you how similar I felt. However, this was more than a year ago. So be reassured: You will get used to this new feeling of life, most likely your appetite will go back to normal as well as your weight and sooner or later the insommnia will go by.
Indeed, flushing can be something like beeing newly born - physically and mentally.
I hope you will feel better hearing from other "old" flushers that your experiences is someting withing the range of what might happend during body cleansing.