I started getting a bit more "round" at about 11 weeks too. DH and I could notice, but other people didnt really notice till about 4 or 5 weeks after that. I coulld still wear my usual pants, but they were just a bit tighter. I also felt a bit bloated then, so it was probably partly bloating and partly baby for me.

Yay about your scan next week too!! I loved my scans, it was just the best to see little bub on the u/s.