I think between 4-5 months but didn't have a 'typical' bump that anyone would easily notice until about 6 months. I prob measured slightly small throughout the pregnancy (although ended up having a big baby!)
I'm tall (5'10") and one has sort of appeared in the last week (20 weeks) but to anyone who doesn't know me, I don't look pregnant yet. I'm told at my height it could be up to 25 weeks before I really show.
I started to show at 15 weeks but it looked more like i'd eaten all the pies. I'm 19 weeks now and have a fairly big bump although I still get people saying "oh, i just wasnt sure if you were... Y'know... I get it wrong sometimes"...
I'm 5'4, my first, was quite slim - not skinny - before becoming pregnant
With my dd I didn't show until after 20 weeks and not 'properly' until about 25 weeks but I am tall. This time however I've been wearing maternity trousers for a good few weeks- so getting bigger from 10 weeks I'm now 15 weeks could get away with being chubby for another couple weeks max I'm showing so early this time!
I've got the bloated bump but when I look closely I can see a small firm bump forming just above my hip bones and I'm only 11 weeks (well I think I am till I go for my scan) so I wanted to see if everyone else was the same.
I started having a tiny wee bump at 15 weeks. I could tell it was there but it wasn't obvious to anyone else. I'm now 20 weeks and I have a definite bump. Not huge, but definitely there (my trousers don't fit anymore and some of my blouses and tops are too tight).