I'm 10 weeks with my second, and I can tell there's something there, but to anyone who doesn't know it just looks like a gut, ha. I remember with my first that I was so excited when it became obvious I was pregnant and not just rapidly gaining weight. I think a lot of it has to do with your build, if you're petite, you'll probably show early. Congratulations!
Around 24 weeks but it wasnt obvious, only i could tell and a few close friends. Im 28 weeks now and still only looks like fat lol
I didn't really start to show till 30 weeks
Around 14-15 weeks or so. I don't think it was obvious to anyone but me and my sweetheart though. Even now at 20 weeks it kind of just looks like a big beer gut lol
I will have 2 under 2, and started showing at about 7 weeks(not bloat, but bump). I honestly don't remeber when I started showing with my first. Wish I could be more help.