Bloats to Bumps

Jessica
Ok, all you ladies with bumps, this 10 1/2 week first time mama is getting jealous of those cute bumps!  But I want to ask you, how did you know for sure when your bloat became a bump? Did it get hard, was it a sudden change in shape, or something else?  I want to know what to watch out for. 😊
(Also, yes the bloat is because of baby so I know that counts, but I'm just looking forward to an honest to goodness, yes-I'm-really-pregnant bump!)