THATS PROB WHY your taking it sounds like the PMDD kicked in. Doctors do what they can and if it wasn't for them I am pretty sure another medication you take that works wouldn't be at your disposal, careful how you use one situation to write off everything medication isn't 'ONE SIZE FITS ALL' doctors are busy because they are helping all their patients. Hope you can find out something to help.
by the way a U.T.I. is caused by a lot of easy ways and easy to prevent if you know what they are it might be easier to get a U.T.I. ON YAZ but it wont be the actual cause of it.