Thank you for the advice, it is appreciated. Gidget doesn't normally take any antibiotics except Clindamycin, which they all take every few months for gingivitis. In fact she just finished up this morning on her 10 day, but they are unrelated antibiotics and the Clindamycin is certainly not going to help the UTI. Now of course I have caused myself more concern. Do you think the back to back meds may cause a problem? She's only been on them for 10 days and the last time she had it was I think actually 6 months ago as her gums have been doing better. Sorry to be a bother, but I just want to do what is best. In fact with the Clindamycin they have had me do up to 14 days, so I am thinking the new med shouldn't hurt her.