Thanks for your replies guys! I had appt today with ob and told of my concerns he showd me a list of the antibiotics available to pg women and said they all have a long list of "possible" side effects, he chose the MACRODANTIN because it's affective with the eccoli strain of bacteria I have blah!! thought you only got that from eating food!!!!??? He also said I need to take them because it could go to my kidney's and cause alot more problems. So I'm reluctantly taking them starting tonight for 5 days, I'll let you know how it goes. Apparently the bacteria can be stuborn to get rid of? and some pg women are on them through the whole pregnancy