I think I have finally tracked down the culprit. After the last treatment of bases, I felt very ill after eating lunch. I assumed it's to do with the treatment as it can cause various symptoms and that's normal. To cut a long story short, I consistently got the same symptoms the following 2 days and was feeling so ill that i needed to lay down. I checked on my food journal and realised that i had curry powder in my lunch that hadn't been tested and i did a self test and it was allergen. I self treated right away and could feel my symptoms slowly ebbing away. It was a really amazing experience. I can now say to you that I felt it working, not just some vague allergies like calcium which i couldn't put my finger on.
My self treatment, however, wasn't effective after 1 day and I accidentally ate something with some spices in it and I felt ill very soon after. So I self treated again that night which was last night. I think I'm very allergic to spices and I don't know what other spices I'm allergic to, so I will check with the therapist. The allergy to spices is causing me brain fog, sinusitis, headache, muscle pain, back pain, dizziness, and muscle weakness.