How much/fast did you start showing with baby #3?

SR
I was hoping to get some input on how fast you ladies started to show with baby #3. My husband and I prefer to wait to share our baby news until we're safely past the first trimester but I'm not sure it can be so easily hidden this time around after reading different things. I am 5'4", 125lbs, and only half way through my 4th week and maybe I'm just crazy but I feel like I'm seeing a bump! (Nooooo! Lol)
1st daughter was 7lb, 9oz. 
2nd daughter was 8lb, 8oz. 
I know every woman is different but what has your experience been like?