How lovely for her.
She is obviously really enjoying motherhood and her babies.
I presume she believes her husband is going to be a better family man this time round, despite his history. I hope for her sake and her children's she's right.
The comments on this thread are really pathetic.
When someone announces a pregnancy is your first thought usually whether you'd shag her husband or not?? What a weird and warped response.
And lots of women on Mumsnet have good relationships with significant age gaps, and lots of us have sex with our 60year old or older husbands. Because we love them.
Think about who you are insulting here it's not just Carrie Johnson, and I'm not sure why she deserves it, you are also insulting lots of other MNers reading.
Grow up.