I had this white bump on my lower lip for several months now, what could it be? And how can I get rid of it?

This white bump appeared in june and it was really small and very unnoticeable. After a a few months ped, it has gotten bigger. It doesn't hurt or anything though, but it is very noticeable. I have a feeling that it is a Sebaceous (Oil) Glands but I'm not sure. I tried to pop it and cut it off but it just reappeared again. It has been here for about 5 months now. Most days it is big and some days it is small. Do you have any ideas of what it could be? And do you know how I can get rid of it?