stayed latched on for effective milk transfer.¡±How to tell if you have flat or inverted nipplesFlat nipples1 don¡¯t protrude very far from the areola (the darker area surrounding them), even when stimulated.An inverted nipple dimples inwards at the centre. It may look like this all the time, or only when stimulated. Sometimes inverted nipples retract back so they are level with the areola, or they may even sink down into the breast tissue.One or both nipples can be affected, and it¡¯s estimated up to 10% of first-time mums have at least one inverted nipple.2 If you¡¯re not sure whether your nipple is inverted, try the ¡®pinch test¡¯: compress your breast gently, with your thumb and forefinger either side of the areola. Most nipples will poke out, but if yours retracts or pulls inwards, creating a hollow at the end, then it¡¯s inverted