Being sick was a one-day thing. I did buy a gluten-free version of Quaker Oats oatmeal. I'll give it a go today and see if I do better. Celiacs can react to oats, so it's possible that was the source. For the record while fully hookwormed I've eaten hundreds of bowls of regular oatmeal without consequence. The clock is ticking, I hope, until my celiac days are over. From now on I'll aim for a 5-month cycle between inoculations.