Hey Cakemonster, many congrats.
Firstly, 40 is NOT old!!! At my antenatal classes, I noticed that most couples there were either teenagers or 30 - 45 year olds, so please don't think that you are an old mummy to be, you're not!!
My mum had me at 39 and I swore that I would never have kids 'that old' - just cos when I was a kid growing up in the 'provinces', it was unusual to have kids at that age (b ut then I was child no 7!) and a few kids at school made unkind remarks about my mum being my granny. But as I got older, it just didn't matter that my mum had me later in life, she'd had 6 kids before me and i really admired her and still do for her and dad creating the kind of family they wanted.
Now, in my case, history has (almost) repeated itself, cos, though I would have liked to have started a family earlier, it just did not work out that way and I had my ds at 38 and have just given birth at 40 to a beautiful daughter. Do I feel old? No! When I look at one member of my family who became a mum at 20 and has really struggled, I feel fortunate to have lived a little and got myself somewhat sorted before becoming a mother. Honestly, older parents can bring so much into a child;s life.
I figure that well life has allowed me to have kids when I'm more settled and have a husband and home. Honestly, just pop down to Homerton hospital antenatal classes in Hackney, east london and you;ll see that you're not an old mum, you're an average mum!