I've been releasing a LOT of visible heavy metals during and after my colonics.

I have been doing a series of colonics and around the 4th I began to release what my therapist believes is heavy metals. A LOT . More than she's ever seen in 20 years - !
It is NOT microscopic.
It looks like black filings or shards - larger than grains of sand. Too heavy to move with the rest of the matter in the water.
I saw some in the toilet today and it took 2 flushes to get rid of the "sediment"
I am looking for a place to test the matter to see what it is.
ANY information you find - please share ! and I will do the same!