My daughter is expecting her 2nd baby.  She's had UTI's in the past.  But, this pregnancy, she's had them several times.  Her Dr. gives her the same antibiotic every time.  Some doses are for 5 days, some for 7 & some for 10.  It goes away for awhile, but it always returns.  I'm wondering if the antibiotic isn't killing all the germs.  Does it knock them down during the time she's taking the meds., but not enough to get rid of them, and they come back when the meds. are finished?  Each time seems worse than the time before.  Her Dr. is unconcerned, but I don't think this is normal.  What can she do besides drink cranberry juice?  How can she get rid of it once & for all?