Worried about mouth cancer. Worried.

I am a 22 year old young man. 6 months ago I developed a blister on my cheek near my wisdom tooth. Initially it was painful and red and was slightly raised, but after some time the pain and redness disappeared and a white round spot was left which was not healing. I consulted 6 dentists, all of them advised me to get my wisdom tooth removed and said that this is happening due to injury to the wisdom tooth. Then I got my wisdom tooth removed 2 months ago, but still this white spot has not healed completely. I used to eat paan masala earlier, but as soon as this problem occurred, I stopped eating it. Now I am not used to it. Now I am scared and worried that I might have got mouth cancer. Please tell me what is this and can it cause mouth cancer. I am very worried.🥹