Small white bump in inner lip (pic included)

I posted on the general forum and also wanted to post it here.   I have two of these, this one is just inside my lip and the other is further below it, and much smaller and flatter.   My dentist thinks it's a virus but wants to check it again in 2 weeks.   Because it is white and I see most of the people who have posted pictures don't have white lumps, I am worried it's something bad.