gmas,
I am happy to see you have stopped using the smokeless tobacco. It is no less harmful than smoking. You have made the right choice in asking for a referral.
The tongue can be an unpredictable organ. Bumps, lumps and sore spots can come and go. If your bump disappears prior to your appointment I would still suggest that you go and let the Oral Surgeon know what was going on and give him/her an accurate description of the area.
Try and keep your spirits up.
If you have any questions let me know.
Cheers,
Mike