Well I was going to say "you are mad, woman!" but then I saw Jan's pic of miaow's bubba and
Oh, no-one can tell you what to do, and logic doesn't really come into it. If you really really want a baby, if you will feel bereft without one - then go for it. But bear in mind that things don't always go according to plan. My 5 year gap between ds1 and ds2 bears testament to that, and one of my reasons for no more is that I couldn't bear to go through that again.
I'm sticking at two - I don't do babies (I like 'em n' all, just can't cope with my own). I'm also not particularly good at being pregnant - pre-eclampsia, high blood pressure, swollen ankles, morning sickness, heartburn, acne, hair dropping out and then - just to put the tin lid on - out pops the baby and in kicks the PND.
But I think that decision of no more is such a hard one to take. I'm 99.9% sure - but not so sure that I will do anything permanent about it, I'm still dithering and on the pill. There's a teeny bit of me that hasn't quite accepted no more babies - and I think when I do accept it I will have a period of grieving (it's a saying goodbye to the excitement of pregnancy, the feeling special, the name choosing, the anticipation...and, for me, a sad little farewell to the Eliza I'm never going to have).
I also suspect that dd1's imminent departure for the school gates may have some bearing on your broodiness. I was pregnant with ds2 when ds1 started school at it did help take the edge off that particular rite of passage. Starting school is when they really start to break away - and you can feel a little redundant, I know I did. My role as number one single most important person in my child's life shifted irrevocably - suddenly Miss Gleave and Mrs Hoyle had an input!
Try imagining that the decision is taken out of your hands and you are pregnant. How do you feel?
Oh I dunno, MI...I mean, I really don't
And what's wrong with boys?