Hedwig I wish you well, we are ttc#6 at the moment.
We had big issues towards the back of last year, we had been ttc then dh decided he did't want to carry on, no more children. To say i was devastated is the understatement of the year, had an early loss at xmas, (after he told me he'd changed his mind).
we talked and talked, i cried alot, i pleaded for him to just think about it and a month ago he got our 5yr old ds to hand me a bottle of gaviscon in boots and say
"daddy says you'll need this in a few months"
What i'm trying o say is that dh clearly understood how much it meant to me, I don't know why but i can't explain my desire, just that it's overwhelming. My dh took all this into consideration and we're having one last child. He's very happy with his decision, it's not just for my sake.
I know it's the right choice for us, noone in our family will regret it and I truly believe you have too. If it was that important to your dh then it should matter to you too, which it clearly does. (have you joined us on Dec bus or January,? which i think i'll be getting on in next few days, )
Large families are fab, yes we have days when we'd like to lock ourselves in the shed, but don't parents of 2 children feel like that sometimes too.
Hope it happens quickly for you, and good luck. x