Good luck girls! I'm trying to lose 6 kg before TTC too, same reasons as you, Mannie! I've actually already lost 18kg over the last year or two, so it's just the last few that I'm trying to get rid of and keep off!
It's a bit hard at the moment because I don't know what's going on with work, really, so I am lacking routine. I cycle 20km every day at the moment, but I know that's not going to be enough. It'll stop me from gaining for a while though!