T.F.
First, don't freak out and don't research on the internet.
I've had blood in urine at home and reported it to the Dr. and it was a UTI. He gave me some anticiotics and it cleared right up.
If you feel better about going to a urologist, then request to do so. It is your body and there is nothing wrong with seeking a more specialized Dr. if there is some sort of concern.
I personally don't worry about x-rays and CT scans.. You'd probablly freak out if you really know how much radiation you are getting just walking around every day. Moderation!
Good luck!