Does My Baby Have A Mucocele? (photo)

I'm glad to have found this forum!

I noticed this strange fleshy protuberance in my almost 14-month-old daughter's mouth today, and it concerned me. Since her pediatrician's office is closed because it is the weekend, I posted a photo of it on a parenting forum to ease my worry. I was told it was a mucocele, which I had never heard of before, and that it would probably go away on its own. I sought out photos of mucoceles in children, and they look very much like the baby's growth.

Here is a photo link of my baby's suspected mucocele: http://img.photobucket.com/albums/v460/yodergoaty/Poultry/growth.jpg

Is it indeed a mucocele? And, if so, what is the chance that it will subside on its own? Should I take her to her doctor Monday, even if it does not get larger? (I know this site doesn't take the place of a doctor's advice, but I'm just curious if I should hasten to the doctor as if it were an emergency.) It doesn't seem to bother her one bit, and I would feel silly if I took her to the doctor only to be told to ignore the mucocele and let it go away on its own!

Being an adventurous little toddler, I wonder if she will burst it on her own whilst playing and falling and clamboring about. I guess that is how she got it in the first place!

Does anyone here have experience with similar mucoceles and very young children?

Thanks for any advice!!

-Shawna