B Bump - when you look from the side your belly looks kind of like a "B" shape (crease in the middle or upper third). That's pretty much what mine is now - baby below the belly button, displaced organs above and a slight crease in the middle. Lovely.
the boymom is expecting a girl! big brothers 12.2009 and 02.2012
I haven't heard of an A bump! I think my B bump is coming from the tummy bulge I had pre-preg making my bottom half squishier than my top half of the bump.
Re: possibly an extremely stupid question
big brothers 12.2009 and 02.2012