Sadly the ranges here seem to be very limited (C&A, H&M and Benetton are the best shops), most 'baby shops' seem to stock maternity wear designed for 80-year olds and it's almost impossible to get nice work clothes.
However, I bought things online. I got a great suit and a couple of nice dresses from
Mamas and Papas in the UK and I got a nice dress and shirt from
Isabella Oliver in France (in the sale naturally!).
Hope this helps and good luck with your pregnancy!