I just now got some cream for my canker sore. I had some already, but it was only for cold sores which are located on the outside of your mouth. Luckily, I was able to find some at the store for canker sores (basically cold sores on the inside of your mouth.) Now for the healing time, which is typically five days. 
I got the cream this afternoon but just now posting this.

I got the cream this afternoon but just now posting this.