Doubts On Hematuria With Blood And Pain While Urinating

Patient: Hello, I have just recently, this past week, noticed blood, after I urinate, dribble out, also a pain while urinating, and frequent urinating, and a pain in the lower left side of my back, I am a 23 year old male. I did a little research and think it is hematuria. How serious is this, and how worried should I be?Thanks Brad.

Symptoms: blood, after I urinate, dribble out, also a pain while urinating, and frequent urinating, and a pain in the lower left side of my back

Doctor: