Sore On Side Of Mouth Sore Bump On The Left Side Of The Roof Of Mouth?

Sore Bump On the Left Side of the Roof of Mouth? - sore on side of mouth

I had this lump in the left part of the roof of the mouth for at least a year. I was never really worried about this before because I did not realize that not sad when I hit it with your tongue or fingers. I saw a little information on the Internet, and I fear it might cancer. Could someone please help? Thank you.