I find it can be hard at times to remember this sort of thing, too. I now keep a diary and note all medication taken and the time, as well as a brief note on significant symptoms.
Is a leaky gut referring to reflux? This can be a symptom of M.E.
The health of the gut is vital to your overall health, and is the first thing that you need to treat.
A quote from the HFME site:
Some of my biggest mistakes include the following:
Not fully understanding the enormous importance of gut health and of diet. As I have recently learned, good gut health is vital to recovering from any disease as the gut houses half the body's detoxification system and half of the immune system. Food should be treated with the same respect as a prescription drug.

http://www.hfme.org/treatmentconcepts2.htm#703252345


Have you had comprehensive allergy testing done?
What is your doctor currently doing for you, or have you both given up on each other?