bacteria found in urine sample

Me
Just got a voicemail from my docor's office saying they found bacteria in my urine sample at my 8 week appointment. I am now 11 weeks, wondering why they waited so long to call. But anyways- they said they won't treat me for it, because the amount was so small. Anyone else have this similar scenario? I'm wondering why they aren't treating it. When I look it up, it says the bacteria can transfer to your baby during delivery if still there. I'm having twins so am extra nervous about everything!😔