Thanks Nicola and Bex, it does seem like the DMSA is really helping me. Can't think of a very good explanation for that apart from mercury problems. I was OK this morning, didn't wake up feeling awful. Maybe I'll keep it to two days between rounds for now.

SAD is an issue as well, but that's possibly because mercury is interfering with hormones that regulate things like my body clock, production of melatonin, etc. Without the extra help from summer sunlight, they're going haywire. I hope I can chelate fast enough to mitigate the effects because it's a long time until April, which is usually when the SAD starts to clear a bit.

This is such a roller-coaster.