Most probably it may be a mucous cyst
and if so it is harmless. This would be few millimeters in size, circular in outline and slightly bluish in color. If gently pressed it is not painful. But if it is irregular, soft and blanches on pressure, it may be a hemangioma
. If the latter, it may need some surgery, but at a much later age and hence not to worry. Consult a Surgeon directly.