Help my Bug!

Hi my name is Bug, my mom (Emma) adopted me just a short 5 months ago, she saw my picture online and went to the shelter to adopt me that day!!! I love snuggling under the covers with her, looking out the windows, and I absolutely love to chat with her all day. I'm an old kitty, the shelter told mom that I'm around 10 years old. I'm a purring machine, and love long walks on my leash. I recently stopped eating and mom noticed that my belly got really big and rock hard, I also stopped going to the bathroom.. so mom took me to the vet today.The doctor said I have a very abnormal shaped mass near my liver, my belly is filled with fluid and I need an ultrasound, blood work, possible surgery and the vet needs to relieve my belly of the fluid buildup. All of this needs to be done at a specialist, since my regular doctor has never seen a mass like I have...Please help me feel better!! I love my new home with her and want to stay around for a long time!!