Hi thanks for your question.
You had haematuria ( blood in urine) few days back and on urine examination, it was found that you are having urinary tract infection
UTI.You had taken antibiotics for 4 days and blood has changed its colour.You doubt that whether this blood is from cervix
or from urinary tract. The best way to differentiate between the two source of blood is to get yourself examined by gynaecologist,who may be able to discover the source of bleeding if coming from cervix. Repeat urine examination will also show RBC
in routine urine examination in case of blood coming from urinary tract.
Hope this answers your question.