The second theory would be my guess too Bex. I would think the immune system was depressed from the infection, and also was directing its energiy and resources towards that. This probably would have meant a temporary cessation in detox symptoms. Now that the infection is gone, it's back to chelating.

Maybe it's a good sign. I certainly found that between chelation rounds recently, I actually felt worse and had more symptoms. Sometimes the body just seems determined to "get the stuff out" and there isn't much we can do apart from go along for the ride. I do think it's a healthy sign though. I'd actually worry if my body WASN'T trying to chelate on its own.