Thanks for the suggestion Kelly. I finally found the link with the picture of the cardigan I liked (strangely enough through someone's blog then tracked it down and lo and behold it was the same one!!!
Here it is: http://www.knittingpureandsimple.com/cardi.html --> the green on in the bottom left corner. I think something like that should work well to keep a little warm and gives plenty of room for the bulging belly!!
So, I want to try and find a pattern similar to this one for free and if no luck then try to find a shop to order the pattern from. Anyone seen anything similar to this online? I am almost done with my first finished object (so, is that a FFO??), so I am getting ready for the next!