I really didn't start to show to other people - other then hubby and me (and maybe hubby only said I was showing to shut me up!!! ) - until I was about 18-20 weeks.

I put on a big growth spurt at about 21 weeks and now it seems everyday I get a bit bigger!

How I differentiated between my tummy fat and the baby fat is that my uterus is rock hard. Its like I've got a six pack stomach!! LOL!!! Seriously where the baby is is really hard and where my uterus has not grown to yet is not so hard. Does that make sense? It started to be rack hard from an early stage - say around 10 weeks or so? I'm not a huge girl but I'm not tiny either so I hope that helps.