Sick Boy (part 4)

Yesterday (6/4) wasn't a very good day for Winnie. We had a really great weekend with SSD Sarge (pictures to come) and decided to go visit SSD Owens for some play time like we do every few weeks. Winston is the mellow one out of the crowd and was acting like his usual self wondering around. About 4o'clock Winston had one of his shaking spells from a storm that was coming in. It didn't last more than a minute or so and he seemed to shake it off (literally) and, to my surprise became excessively playful. He took a toy and began running and trying to get Owen to play. I am running the behavior over and over in my head trying to pick out nervous signs and I can't find any. His tail was wagging but not excessively, he was throwing the toy up and catching it but not growling or shaking it. It seemed to be very normal play behavior. He within seconds for the first time since the day I got him, dropped the toy, and urinated. I was baffled. He has never done that. He is GREAT with telling me when he needs to go out, and he was offered a potty before we entered about 1hr before that. He did not go potty but wasn't interested. Laurel took him outside to potty after he stopped and he went again a LOT. He laid in the hall noticeably upset the rest of the afternoon. While cleaning up the urine we noticed traces of blood. This morning my vet simply asked for another urine sample, which i'm waiting to hear about.
Today Winston is very mellow and seems extra tired. His water intake and pottying have been normal. He's barked at cars like usual and has normal color in his gums. I am waiting to hear from the director of SSD about what she thinks.