Count me in as well - my Ob doesn't want me to gain any, in fact he's quite happy I've lost about 4kg since I fell pregnant. Less an issue of them not taking me but more to do with just trying to reduce the chances of complications etc.

I am trying to watch what I'm eating, my cravings for green veggies seem to be helping in that regard at least and trying to stay active - I find swimming/walking in water helps with this a fair bit.