I BF-ed my 20 week old DD for 3 weeks and it was SO painful. As she was in SCBU lots of HCPs checked the latch and pronounced it fine. I asked one nurse to check for tongue-tie as feeding was so painful. She said DD's tongue was fine.
I had had a tough delivery and was struggling to recover, and the pain of feeding was too much, so gave up.
DD is now at the age where she's putting everything in her mouth and licking things. I can now see her tongue is 'heart shaped' at the end, it has an indentation in it IYSWIM, like a rounded w. When I BF-ed I had lipstick shaped nippled and my areolas looked (and felt!) sort of sandpapered, IYSWIM (sorry if TMI!).
Did she perhaps have tongue-tie after all?