I'm 6+3 with my second child.
The first time I didn't start showing until around 16 weeks. I'm also (very and embarrassingly) overweight so that didn't help and I suspect most people didn't notice until around 20 weeks - I just looked like I'd been eating too many pies again. I put two stone on in that pregnancy, all in the second and third trimester, and lost it all within two weeks of having the baby.
This time, I am filling out really really quickly. I haven't put on a single pound but I can't do up my jeans at all and I look about six months gone! It's ridiculous! I have maternity yoga pants on from my last pregnancy today as I'm working from home and they are so comfy but I don't really want to wear maternity clothes for work until after the 12 week scan.
Is this normal for a second pregnancy? I am assuming it's bloating rather than the baby as the baby is surely TINY at the moment.