I got in contact with another doctor and here is her suggestion:
The test results only showed a small amount of blood which can happen with a mild urinary tract infection.
Are you still having any symptoms?
If so, you should make an acute appointment to be seen.
My questions is: Do I need to make an appointment to see her? My current situation is:
1. The pain in urination is gone;
2. Frequest urination is hard to judge because I drink a lot of water and the urge is controllable;
3. Cloudy urine is only occational (not seen every time).
Great thanks to Dr. 禦 and all others who responded to my post.