During 2009 - 2010 when I was pregnant with my first baby, I put together a special edition of jaynerutter.com.
I couldn't do all the crazy DH riding that I was used to. So I decided to document what 'pregnancy riding' and exercise I was doing while spending my energy growing a little person.
In case there are other pregnant DHillers out there that are interested in how long they can keep up the sport; I stopped any DH and dirt jumps at about 13 weeks. But I continued with XC riding and road riding right up till about 33 weeks (when I needed to conserve all my energy for doing everyday activities!)
Read it here.
There are also a few blog entries when I was pregnant with my second and third babies.