Re occurring UTI

Mida • Blessed and highly favored
I keep getting UTI's but I never have symptoms. The first time was in July but didn't release it till September and was put on anti biotic they retested again after my treatment n bam it was still there, so they gave me another treatment, but this time for 2 weeks. But nope the infection was still there after treatment. I received a call today from my doctor and said to come in because I still have the infection... this is getting frustrating because I never get any symptoms. ..