anyone else had this happen?

Kelley • Mama, step-mama, mama-to-be; writer, marketing consultant, foodie, lover of the ocean 🌊. Blessed - praise God!
Went to dr for my 32 week visit yesterday...she said the baby weighs 3 lbs, 14 oz...and that she might be BIGGER than my son (who was 8lbs, 10oz)!  I feel huge, but moreso im uncomfortable and it's really hard to bend or generally move. Can't imagine her getting to be a 9lb baby in there...why would the dr say that?!
She also said I have an extra lobe on the placenta, not sure why. But bi cause to worry. 
I'm trying to relax and start taking things slow as we approach the finish line. Trying not to stress. (We've had our roof ripped open by a tree, my ex take us to court and a job loss, all in the last 2 months). But I don't know why the dr would tell me things that she knows would stress me out, if they're no big deal.