God that sounds daft, but in the bath today I realised my nipples are really quite flat.
Ive only ever seen 3 other womens nipples in real life and all of them had sort of 'pencil top rubber' ones! lol
Mine are nothing like that, not inverted or completely flat but not protruding at all.
Couldn't get the hang of breastfeeding both times previously and am thinking maybe this is the reason?.