Tops for that in between time
I've noticed that it might be time to wear something a bit flowy. After careful searching, I found a few tops that are transitional yet are still things I'd wear anyway:
Gap soft tank
Flowy, with a fashionable drapey look. Cut for hiding the waist, without being obviously pregnant-looking, especially good for solving what to wear to the office right now.
My mom suggested that I might want to check out Eileen Fisher for loose, flowy tops that are distinctly un-maternity. I fell in love with this one. Stylish now, stylish as you expand, (I'd say it's probably wearable until month 6 or so) and stylish during months 10,11, and beyond.