Hi parsnip, I hear what you're saying about static growth/placenta. I had my second scan (for comparing and charting growth) on Friday and all was fine with me, baby continues to be small but progressing.
Honestly, the worry I put myself through, I slept for 2 hours the night before the scan, was so anxious....over nothing. I was 14 days between scans 
I know I can't reassure you but the scan will be here soon, you'll get answers one way or another. Bollocks to stupid comments too, ignore them, I'm so sick of everyone talking about my body and how I'm carrying etc. If that woman at the supermarket tells me "tonight's the night...." once more. I've actually started driving 20 miles to another shop so as to avoid her and her comments on how low I am, how she can see I'm pregnant in my face....how rude!!