I think I may be mad to even be considering this. Have 2 DD's aged 2.4 and 10 months. I would love another child but almost immediately after DD2 was born OH started saying how he was too old to deal with the sleepless nights (he's 42 so not exactly ancient ) and didn't think he could face another. I kept fairly quiet at this point because I was pretty sure that give me a few months I would really want a 3rd (and we had talked about possibly having 3 before DD2).
About a month ago OH directly asked me if I wanted more children - he caught me on the hop and without thinking I immediately said yes, I'd love one more. He couldn't believe how strongly I'd answered and said he was taken aback by it (this was all done in a nice way). We kind of left it that (guess we were both mulling it over)
On Saturday he suddenly blurted out "if you really want another one let's start trying now" but we were at his mum's and didn't really have a chance to discuss (and I thought he was just trying to get into my pants!). I pinned him down yesterday (metaphorically speaking) and, yes, he did mean it. He'd realised how much I'd like another, he would quite like another really but doesn't like the thought of coping with the crushing tiredness of the first year or so. So, rather than wait until he's even more ancient he'd like to get cracking now.
So conceivably we'll have 3 under 4. In fact, if I fell pregnant as quickly as I did with DD2 we'll be having another in 9 months time (which would make DD1 3.1 and DD2 19months). Tell it to me straight - hardwork but rewarding and they'll possibly play nicely together? (DDs are like soul mates already which is lovely). Or a disaster waiting to happen?!