Did you get a prescription for the Antibiotics
? You don't mention it, if not you are VERY irresponsible.
I am not an M.D., so all I have to say is a little bit of my own experience while chelating: I've had scares several times, including about my kidneys, it always turned out it must have been a side effect of chelation and part of the healing process (it's always been a completely new part of my body that previously I hadn't ever cared about; kidneys are perfectly fine too says nephrologist after numerous lab tests), it all went away in the end, sometimes after 2 weeks, the harder cases after 4-8 weeks. So from THIS experience (limited to ME) I'd say it's safe to wait it out. Also, the area where it happens sounds like one where I'd expect mercury detox related issues.