You as an individual do not have resistance to antibiotics. That is a common misunderstanding .A given infection with a given bacteria may be resistant to a number of antibiotics. In general bacterial resistance is more prevalent for about 2 months after you take a given antibiotic.
You may have for example E.coli infection and it may be resistant to antibiotics X and Y but perhaps sensitive to Z...so you may take Z for 10 days and clear it up...Later in 6 weeks perhaps you have another E. Coli infection --- it is tested and this second time this particular infection is resistant to Z and Y but is sensitive to antibiotic X..
So the above is an example of how resistance to antibiotics works. Resistance is specific to a bacterial population. Resistance is NOT a property of YOU!!
Now allergies or side effects are properties of YOU! If you get hives with Levaquin for example that is indeed a property specific to YOU!
The above situation that you describe your current UTI might respond to Augmentin or Keflex or Ceftin as a few examples ...
There are other choices possible ...
The urine may most typically not be sent for antibiotic sensitivity / resistance testing .. This may vary....empiric treatment is usually tried first and if you should have a more severe or kidney infection then the urine is usually then sent for testing vs antibiotics ...
I hope that this information is helpful for you.Let me know if you have further questions.I will be happy to get back with you. If my answers have been helpful and to your satisfaction then please remember to leave positive feedback Thank you and Best Regards,
Anthony Bray MD