You might want to consider looking at the site badbugs.org i had the same things happen as youve described. Humaworm no longer working and have loads of food inyolerances. I found that i became progressively less tolerant of things that used to help me like sauerkraut, herbs etc. Im now down to 8 tolerable foods. The two parasites i have are omebas. They are single cell organisms and hard to detect and eradicate apparently, hence the 4 antibiotic regime ive been presribed.