U.S. doctors online nowAsk doctors free
A 19-year-old female asked:

I took bactrim (sulfamethoxazole and trimethoprim) to treat uti for three days. i am worse. now have vomiting, nausea, cramps, burning urination, fever, and low temps of 96.4. what could this be? could it be a kidney infection?

2 doctor answers3 doctors weighed in
Dr. Margaret Gourlay
Family Medicine 24 years experience
Worsening UTI: Yes, these could be signs of a kidney infection, or a bladder infection that is not sensitive to Bactrim (sulfamethoxazole and trimethoprim). The prescribing doctor needs to hear about this immediately, because someone who is vomiting cannot keep down further meds. They will probably arrange a late add-in clinic appointment or ER visit.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Ashu Syal
Pediatrics - Nephrology & Dialysis 31 years experience
Yes: Sounds like pyelonephritis or kidney imfection. See a MD ASAP as urine bacteria seems to be resistant to Bactrim (sulfamethoxazole and trimethoprim) and prolonging kidney infect can cause permanent renal damage
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Jun 16, 2019

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.