Christine is right it could be many things and as someone said - Ideally go to someone who is well versed in Oral cancer (an ENT) Sometimes because of your age they won't take you seriously thinking its an older person's disease generally but there are numerous young people who've been getting it and if you see a general ENT who isn't up on the latest stats or doesn't see a lot of OC patients then you could get blown off.

Usually with people who chew it's the cheek and gum that are effected, not often the tongue.

HPV related base of tongue cancer is usually late 30's and up and found down in the throat or tonsils.

Actual oral tongue cancer is often found under the tongue around the sides or floor of the mouth.

Chances are it's not cancer but better safe than sorry.

best of luck