Hi there. The only gender that is obvious from this question is that of the doctor..she is female. I dont want to assume you are female because the doctor you visited was one. I also dont comprehend your question clearly..if i am not wrong, you wish to know if the bacteria in the urine can be because of an STD
. Well, the presence of bacteria in the urine qualifies as a urinary tract infection
. Now, in your case, being sexually active may or may not have been responsible. Please check with your partner. It is just possible that bad hygeine contributed or/& different routes of sexual intercourse or handling the area vigourously. If you so choose to be discreet, please upload your photographs of the region & consult us privately on this portal using the premium 'ask-a'doctor' panel & or go to another doctor or the same one privately & confide in them assuming again you are over the 'minor' age limit. Cheers & Please practice 'safe' sex.