Bacteria found surrounded by my urine - could it be an std??

I had gone to the doctor to draw from my hormone levels checked and consult to my doctor about irregular period (every 3-4 months) and i had given them a urine indication.
the results came posterior that there be "unknown" bacteria found contained by my urine, so i was to go and get a culture and sensitivity test done at the condition center at school.
i am overweight, and the tops of my legs rub together, making it sweat within my vaginal area, which might own contributed to the bacteria? i'm anxious and just hoping i dont enjoy an std or something. i've never had a UTI in the past and i'm not experiencing burning or itching...so what could it be? please help! It could be an STI approaching chlamydia, but it is more likely any a UTI (mild ones can have no symptoms) or some bacterial contamination. If you start peeing straight into a cup, you can seize some bacteria from your vagina rinsed by the urine into a cup- to be precise why most urine samples are supposed to be mid-stream ones.
As for your irregular period, if you are overweight that is most possible the cause. Fat cell can produce their own oestrogen, which screws up your cycle. If you want to carry your periods posterior on track, you need to slim down to regular weight.
no, it could be anythibg surrounded by your digestive system