Wow, that's a lot. That is one heck of a UTI and long stream of drugs tried. I'm the type that wants the stronger antibiotic right off the bat to knock out the infection from the get go. Yes, get checked again to see if you still have bacteria. You either haven't fully gotten rid of that original UTI or you are somehow reintroducing bacteria into the urinary tract. The symptoms of a UTI are pretty unmistakable once you've had them so I don't doubt you know that it is 'there' again. By the way, are you male or female and what is your age. (It's anonymous here so you can say).