If i had had uti kidney infection treated with 3 antibiotics.last antibiotic about 2 weeks ago. was on for 3 weeks. now burning incontinence when coughing could this be another uti or vaginal infection possibly? not sexually active?

Just drink water well (more than 2 liters a day) for a couple days. If dysuria occurs + change in urine color (turbid +/- odor change), UTI relapse is present. If your doctor chose the antibiotics based on urine culture, it's time you see a urologist for checking your bladder. If no urine culture was done, it has to be done this time. Burning incontinence with coughing is not typical sx of UTI.