ok - the vet here is checking in...
first off, i am hoping your dog is doing ok...
i cannot understand why the vet has not called you - every pet that is in a hospital is checked before we leave and an update is relayed to the owner by the vet about his/her pet's condition.
as far as HBC's (hit-by-cars)...while it may only look like a few bumps and bruises to you, there are many things that can happen within a 48 hour period that can be life-threatening.
anytime your pet has been hit by a car, GO TO THE VET!!! at the least you can get an exam and the vet should inform you about the initial finidngs, the diagnostics needed to gain more information, and the cost to you.
if $ is a concern for you, as it is for most people, the vet should offer you some alternatives.
get the exam first - then go thru the options...
many folks out there do not have the $ to do extensive work-ups and pay emergency fees...no one should pass judgment on what one person decides to do...my job is to provide information and offer the best medical care i can within the owner's budget...
please continue to update us on his condition...and just because you do not see actual blood in the urine does not mean it is not there...
dr.jess