Thank you both for responding!
I called the vet yesterday and they scheduled me with the exotic specialist tonight at 5pm. However, last night when I took Olive out of her cage to check her out, she seemed fine, was alert and acting like her usual self. However, when she peed after waking up it was BRIGHT RED. Since there was so much of it, I decided not to wait until today and brought her to the ER. The ER doctor examined her and said that she thinks it's a bladder infection but for me to take her home, keep her comfy and bring her back in at our appointment time tonight so the exotic specialist can run better diagnostics. Olive is only 8 months old, so they don't think it could be cancer - either a bladder infection or maybe kidney stone.
She doesn't seem to be in any pain though, and when the vet poked around on her belly to see if she could feel anything, Olive didn't recoil or anything - in fact she snuggled right into the vet's arm.
I'm so worried. I'll keep you guys updated on what happens later tonight.