att. rusfox. flush while nursing?

rusfox i was so surprised to see that you could do a flush while your are pregnant. since you are in europe they probably know more than here. we have a lot of young mothers visiting our (heated!) pool, they are friends of our children. some are curious about what i am doing and one person would like to try it. she is nursing her baby and someone told her not to do it because the toxins might get into the milk. it sounds reasonable to me. do you have an answer to this. thanks johanna