Ok...

Urates are the solid part of the urine....most reptiles and birds produce a solid waste as well as liquid. If the snake has had a lot of water though, it may be mostly liquid. (This is in addition to poo...which looks and smells like...poo. )

It's possible you caused some injury when attempting to pop the snake. Please don't. Save that for someone knowledgeable and skilled at it to show and teach you. You can seriously injure a snake if you do it wrong.

Hopefully two little spots of blood don't mean anything serious, but it's impossible for us to diagnose something like that over the internet.