Is this a tooth?

Today was cold and gloomy, so Tim and I really didn't do much. I got started on sewing her dress which has such complicated instructions. I need a sewers dictionary to figure out what they are trying to instruct me to do! Thank God for the internet. Aoife was pretty fussy today and was drooling like a dog waiting for his supper. Here is a picture of the suspected culprit. Could this be a tip of an incision tooth? It's hard to touch, but it could also be nothing. Yesterday, I made an appointment with the Pediatrician for June 10 to get her shots. I'll ask her then what it is. I also weighed her yesterday, and she is now 10lbs 8 oz!