Feeling overwhelmed

I had an operation in July to have a lump and 1/2 of my thyroid removed. After a really long 7 weeks wait the results came back as cancer. This was at the start of September Since this I’ve been waiting for an appointment with an oncologist. I had notice that this would be at the end of November. I was told that they think that they got all of the cancer cells during the procedure which I’m thankful for, I guess what I’m saying is I’m struggling with the waiting of what happens next? My emotions are all over the place and I’ve had no support since this news was delivered? 
is this normal practice? It’s still the not knowing and having to wait I hate.