Some women have sharp, burning nipple pain after a feed and notice the end of their nipple turning white (blanching). (cindyandjana.com)
You may see a small white dot on the end of the nipple. (cindyandjana.com)
Whether you run the tubing under baby's upper lip or over his lower lip, or thread it into the corner of his mouth after he latches, the tubing must extend approximately to the end of the nipple and must stay within the «sucking tunnel,» or he will be unable to draw supplement from it. (breastfeedingtoday-llli.org)