Ah, thank-you both for replying 
We aren't ttc at the moment, and even if we did decide to stop using contraception, we would just see what happens, I think. Dd1 took 9m to conceive naturally; dd2 took 2 years and six cycles of clomid. I couldn't face 'ttc' again. I'm very happy with my two girls but as dd2 is 2yo next month and getting further from being a baby ... I don't know. I guess I'm missing having a tiny baby!
It's more than that, though. I think we would manage having a third, especially with dd1 now at school ft, and if another baby came once dd2 started nursery. I am an only child with no extended family, as is dh. Our dd's don't have cousins, so there is a part of me that considers this as a valid reason to try and extend their sibling group to 3.
I have posted a lot on here about this, MrsTow!
Dh told me that he would like another baby around the time that dd2 turned 1yo - although I don't feel pressure from him. I know that he would like 3 children but certainly wouldn't be disappointed if we remained at two.
We can afford 3 if finances stay as they are. We would need to move house, but need to move anyway as our current property won't comfortably accommodate 2 growing children anyway.
I like the idea of a gang of 3 daughters. I like the idea of a little boy because we have not experienced having a son.
I'm just scared of being pg and being as busy and physically active as I always am. I'm scared of another ELCS because although the birth itself was great, I was slowed down for a good few weeks during recovery (although I know I would have at least 3 weeks of help and I have friends nearby who I can rely on to help with the school run).
Dd2 starts nursery next September (2015). I have a few more months to think but I think I need to have my mind made up by late summer ...
I think you might be right, MrsTow, I might just need to go with the flow with this ...