Cystitis: You need to see a urologist and be fully evaluated. Sounds as if you may have upper urinary tract infection, in which case evaluation for some anatomic abnormality may be warranted, along with a careful assessment of the antibiotic therapy. Grp b strep should be quite sensitive to penicillin derivatives. Keflex levels may not be sufficient to deal with this. See a urologist.
Answered 6/26/2014
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