Kendra,
Please have that checked by a doctor possibly an ear, nose and throat specialist as soon as possible especially if the lump is growing and there is pain associated with it.
I do not mean to worry you but in our case, my family member, who is not a smoker, had an ulcer on the side of the tongue which we did not think anything of it and we let it go for over two months. Initially the ulcer was small but it had grown to over 1 centimeter by the time we went to go see the ENT.
When we did see the ENT he did a biopsy and it turned out to be cancer. I am not saying this is your case and I sincerely hope that it is not but it is better to be cautious in this case and also for your own piece of mind.
Best wishes to you. Let us know what happens after you visit your doctor.