Blood in your urine and the urge to urinate frequently can also be caused by
uric acid crystals in your bladder. These are formed when you don't
completely empty your bladder and some urine stays in your bladder where it
forms a pool and the crystals form there. When this happens, it is often
associated with a high protein diet and not taking in enough fluids. I
know, it once happened to me. This generally happens when a man's
prostate becomes enlarged which restricts the urine flow. Don't know if a
restriction can also happen to the female anatomy or not.
When a doctor keeps information from me or doesn't explain something to me I
fire them - never to return. Get another doctor and have that one look at
your earlier exam. Also if your doctor is in a clinic go to another
clinic.
If you have urethra blockage, it's a simple though painful (in the healing
process) procedure to correct it.