What do you think about this? My ds (15 months) has a small, pea sized lump on the base of his neck below his ear. I noticed it a week ago and it hasn't got any bigger and doesn't cause him any discomfort. He's currently got 4 molars coming through but us in good health otherwise. I'm planning on taking him to the doctor but suspect they'll tell me to monitor it and go back if it gets worse. Anyone got any experience of this?