It is probable that you flushed parasites. A product that is relatively simple to uses and kills many different kinds of micro-organisms, yeast and parasites is called Para-Cleanse from Natures Sunshine Products. It's a blend of chinese herbs and costs about $50.00 for the 3 boxes you will need, if you join the company and get a discount. It DOES work. I use it twice a year.
Check the Farmer's Almanac for moon phases, best days, etc., or try Astrology Zone