Two months ago i went to the toliet one evening and my urine was pink. Following day went to the doctor and urine test found blood cells and no infection. It lasted about 2 days and hasn't happened since. It was painless. 

I was carrying a heavy bag on my back as well as carrying two heavy bags in each hand. I was moving house and carried the bags for an hour to 2 hours with bus journeys in between. 

I'm quite worried as I'm having a cystocpsy and CT scan in a few weeks. My initial thoughts were the blood was due to the strenuous exercise since I'm out of shape and skinny yet carrying incredibly heavy stuff, but as the date approaches for the scan and stuff I'm getting concerned. 

Has anyone went through anything similar? Does anyone have any insight?