baby's weight

Ashley
Had my anatomy scan this week at 18weeks 6days and Dr said baby measuring at 10oz, which surprised me since the <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a> said at 19 weeks baby would only be 8.5oz. Dr said baby is only measuring 1 day ahead of due date, but was wondering if others found their baby's weight measurement to be different than what Glow suggests, or am I just carrying a big baby!