alot of things pregnant women canot do, there are some natural herbs even for women to help better blood flow on mentruals but can cause a miscarrage in pg women... etc. over doing certain areas of reflexology stimulation to sexual organs etc can soemtimes hurt a pg woman. there is nothing ne win that line of thinking. apparently there is a drastic flow to pull out poisosn /wha tif it also pulle dout amniotic fluid so vital to an unborn child? it is hard to say unles syouaske d specifically WHY?