emergency re sodium hypochlorite

This is rather embarrassing and i didnt know what else to do, so here goes.
i have used MMS for some years and found it very helpful.
about 5 years ago i started to develop an itchy anus. i found i had parasites and killed them off with some herbal tinctures, yet the itch remained. 5 years later i had had enough, and went to buy some mms 2, but found it too expensive , so bought some sodium hypochlorite from ebay.
i then inserted a small piece of a briquette , around 1cm by a few mm thick..basically smaller than what would fit in a capsule. i put it up there dry.
i know have some pains and blood has been coming out , both in the stool, and liquid .
i am really not sure what to do, and a rather worried as to what damage i could have done.
needless to say the itching has gone, only i wonder what else may be damaged.
any ideas in this rare case? please help.

Hi Steve, my mistake (typo) . its Calcium Hypochlorite that i bought, in briquettes .