To give some context, I'm 19, this is my first baby (DD) and I'm 24 weeks pregnant, but there's still barely any sign of a bump?! It literally looks like I've put in a bit of chub on my tummy but no-one would look at me and think I was at all pregnant!!! I know lots of people my age/younger than me that are/were pregnant and looked it from 12 weeks! Every time I've had a scan, they've all said she's really big for her age and that I could possibly be a week or two further on than expected, but there's barely any physical sign of her?!
I wasn't overweight before I was pregnant, I was a size 10/12, but I don't know if it's because I'm above average height for a woman (5"8)? I also feel her move quite a bit and my DP has been able to feel and see my tummy move when she's kicking?? My mum says that it's really weird because I really barely look pregnant, definitely not what most people look like at 24 weeks though??
I was the same with DC 2 - was swimming in a bikini until nearly 30 weeks and no one one have known I was pregnant (in fact - I didn't find out until I was 24 weeks , I thought I was 12 weeks!). But then practically overnight the bump exploded and I was massive!
Completely normal, everyone is different. I never "popped" (my God I hate that phrase), I slowly got slightly chubbier around my middle and only got a bump noticeable to others at about 32-34 weeks, he was born at 37 weeks. I'm size 10-12 5ft 7.5, my mother is 5ft 6 and never developed a bump with me.