Tigger is doing very well--he seems to be healing quickly without any problems. Glynn (my boyfriend) is taking care of him while I'm at school for a few days this week. I haven't heard back yet from the vet so I'll post here when I know!
FINALLY--an update! The test results came back with good news. The tumor was benign, and I'm so glad to finally know. As of Sunday, Tigger is medicine free and doing great