I weighed myself at 16w1d and had gained 2 lbs.
I've also had this "reallocation" PPs have spoken of! My arms and legs are thinner and it's all in my boobs, belly, hips and face. Seriously, I can't fit any of my pre-pregnancy pants over my hips, let alone my belly. But I swear I've only gained 2 lbs! And I have a double chin now. Sigh.