Pain in lower abdomen while urinating and blood in urine

Patient: I am a 23 years female, from two days i am experiencing pain in lower abdomen while urinating and even some blood is coming out through the urine, this is the first time it is happening in my life and i have no case history of urine or kidney related problems, what problem am i having?

Symptoms: Pain in lower abdomen while and after urinating, blood is coming through urine

Doctor: