Pregnancy work clothes

So my office has a strict dress code of business dressy. Typically I wear sheath dresses, ladies suits, and pencil skirts with a blouse.

Peasant style clothing, mini skirts, any form of denim, tee shirt material, and large graphics are specifically against dress code.

I need to maintain the style of dress while pregnant. Any suggestions for maternity stores that cater to this?

I’m 5’ 10” and when not pregnant a size 4 US. Inseam is 31”. Height isn’t an issue usually except for pants.

Thanks in advance for any advice.

P.S. I realize that some people might feel this is unfair, but I do not. I love the dress code and the outfits that I wear normally.