On Monday this week, having returned from Portugal on Sunday, i contacted the Doctor and explained what i had experienced with regards to peeing blood post run. They asked me to deliver a urine sample and pick up a form to have blood taken for testing. I duly did this on Monday with an appointment on Thursday afternoon to get the results.
This meant a week without running which was not pleasant as it just served to keep in my mind that i wasn't running and why. I continued to have no symptoms or further episodes of peeing blood during this period.
It was odd at the doctors as while they couldn't confirm what it was they could confirm that it wasn't rhabdomyolsis or kidney failure. Neither was i pregnant and it wasn't cancer. This was of course great news and led to a diagnosis that it was probably extremedehydration that took a while to recover from.
Lesson well and truly learned and, more importantly, i am back running :)