Thanks everyone 
Had another talk with dh last night.
Got very upset.
I have terrible periods due to a huge fibroid (which appeared during my last pregnancy)
My doctor referred me to my consultant again
Because I asked about a hysterectomy.
But now I have the letter, I can't bring myself to make the appointment.
And I just want one more.
With my view being that they can take everything away afterwards.
Dh is the sensible one voice of reason.
I had terrible spd with both ds's.
I could barely walk last time, had crutches, weekly accupuncture.
Had to give up work due to the fibroid putting pressure on ds early on. Lots of bleeds, hospital visits... You get the picture.
We even had to cut short our honeymoon.
Dh's reasons against are...
The pain I was in last time.
No spare bedrooms, if we had a girl.
Can't afford a 5 bed house in the area we're in.
General lack of money due to jobs needed on the house, needing a new car for me in the next year or 2.
The fact that Ds2 is a rubbish sleeper (ds1 was sleeping through at 3 months though)
We don't get much time for just us, no nights out due to lack of babysitters.
Oh, and I would need a complicated cs again, due to the fibroid.
Dh now feels awful for upsetting me.
Dsd (16) lives with us, she stays with her dm once or twice a week but they have a volatile relationship.
Her dm sometimes nags dsd about living with her, not us. But dsd doesn't want to.
But if she did move in with her, in the next couple of years, then we'd have a spare room.
And I'd regret not having another!