Help! Dog peed Blood

I have a 10 month old puppy who is spayed. She has been peeing inside for the last three days. Today I took her out as there was a little bit of blood that dripped. I can't take her to the vet til tomorrow at the earliest. Anyone know what this can be? :/ 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors