I never woke up one morning thinking that I suddenly wanted to have kids, it was always a possibility and DH and I had discussed it several times over the years but we had gotten so used to our 'selfish' lifestyle that it was put on the backburner. I think the deciding factor was my mum saying that it would be such a shame if we decided we actually did want kids but had left it too late. And mum and i have a great relationship and the thought of me growing old without having the same thing was something that I didn't want to live without. My age was a factor as well, I'm 32 and although not over the hill I thought now was the right time especially as we want more than one.
Like Bel we were exceptionally lucky and it took only one month (actually, only one time!) for our BFP. I was expecting it to take a lot longer and at the time it all seemed to be happening too quickly and though I was stoked it was also very scary as I felt like we'd rushed into things. I'm so looking forward to having our little one now though