Pretending this really happened, one cannot even barely know the answer to your question?.because it could be many different things that only a doctor who can see you in person, should diagnose.
Pink or red urine should prompt an immediate visit to your doctor.
Even if you think it is red blood cells, it could be many other things. Blackberries and beets can turn acid urine red due to the presence of anthrocyanin, while rhubarb, anthraquinone laxatives, and some diagnostic dyes will redden urine only when it is alkaline. The anesthetic, propofol, has been reported to cause pink coloration of the urine, particularly in alcoholics. Other medications that can cause red urine are the phenytoin, phenothiazines, e.g., Compazine . Red urine can also be caused by chronic lead and mercury poisoning.
http://www-med.stanford.edu/school/Urology/Patients/colors.html
It could be a coincidence that the sound you heard and the smells you experienced in the cab, happened just before experiencing the pink urine.
It is most important that you see a doctor who can diagnose your problem.
He/She can find out if red blood cells are present in your urine, or some other agent that may discolor your urine, and find the source to your itchy feeling in your lower lobe.
We care,
Good luck!!