Okay so for about 5 days, I was having an annyoing ache in my lower back, on the left side. A few days later, I had a burning feeling after I pee'd, so I googled my symptoms and it said I could have a Urinary Track Infection that lead to a kidney infection. I got really scared and told my mom and she took me to the doctor. They had me pee in a cup to test my urine, and 10 minutes later they said everything looked fine, but if we wanted to pay extra, they could send it to the lab to test it for infection, so my question is, if sending it to the lab will tell you if you have an infection, what did they check for? They said my urine was fine, but gave me antibiotics for a UTI anyway? My mom asked the doctor about it but he hardly explained anything and seemed in a hurry.