Oh poor Charlie I hope its nothing too serious. I'm glad you are able to get into the vet very fast. I will definately keep Charlie in my prayers, I hope Charlie comes out of the vet very healthy and healing.

And don't beat yourself up for taking him from the shelter. It sounds to me that Charlie loves his home very much and you love him back so much. I bet your love is the best gift he's ever had and the best thing he's ever felt in life