I had gum graft done 8 days ago and the pain seems to be getting worse, especially at night, could there be an issue?

The roof of my mouth where they took the tissue from is extremely sore. Where they place the tissue is very soft when I touch it. I also have a bad taste in my mouth, I'm using the mouth wash and am due to see the doctor in a week. I was told there would be pain, but it's getting worse not better could I have a problem?