Yes the more I think about it the more I agree with you that it's a cleansing reaction. When odd symptoms occur though you just rack your brain for every possible cause!
It's funny you mention H pylori as when I first ate some of the oil, just 1/2 teaspoon straight off the spoon I got a very sharp twinge of pain in my stomach followed by a headache that lasted a few hours.....so the oil was killing something off! Having said that I did take a lot of mastic gum a few years ago as I was convinced I had an ulcer and knew the gum killed H pylori which is one of the main causes of ulcers. It seemed to sort it out. So either it resurfaced or the oil was killing off other nasties.