Hi 
So sorry to hear that you're going through such a tough time. You're right, the cancer has far reaching effects on the whole family. I've been on both sides, I lost my Mom to cancer when I was very young and I've also had cancer myself.

Try to stay away from Google. Any medical queries are best directed to the team looking after your Dad as Googling symptoms often just leads to more worry and unanswered questions. This forum is a great source of comfort and advice, but just remember that every person's cancer journey will be different. 
 

Try not to read too much into your Dad's lack of appetite today. The fact that he didn't have many symptoms means this has probably come as quite a shock to him, it will take a while to process it all. He's bound to have good and bad days at the moment. 
 

Although it's great that you're looking after everyone, it's important to take care of yourself too so you also need some support. Do you have anyone who's doing that? It's important that you have someone you can confide in, nobody will expect you to be ok all the time and burying your emotions isn't a good idea. 
 

I don't know what the future holds, but the fact that your Dad's Consultant is talking about chemo and operations shows that they have a plan, there is hope.

Try and get some sleep, here if you need a chat.

Debs