I had a uti like 3 weeks ago took antibiotics for a week

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It went away for two weeks now I’m begging to notice a smell on my pee. Like I did before when I had a uti. What are the chances that it comes back that soon. Idk what I’m doing wrong. I have a schedule c section Wednesday. I’m on my way to my last doctor appointment and see what he tell me. Any one the same?