Hi All. Welcome Nikitasol!
It took my partner about 36 hours to acknowledge the enormity of finding out we were pregnant with DC1. And then he told me via text! Men I think just have a different way of getting their heads around what is at once a momentous yet totally natural, age-old process. Now we're 5+1 with DC2, I still had to remind him how different it is, emotionally and physically, for us women particularly since we 'live' it every second.
So I'd say what I appreciated most was the small things: like remembering how knackered you get in the first trimester and giving you a back rub in bed at 9pm...and indulging you in the occasional daydream about baby names/baby kit/birth plans etc.
He didn't come with me to MD appointment but did comes for the scans. When he saw the bean at 12 weeks backflipping, it suddenly became real for him because he could see it and tell people and show off the printout etc.
Ellie - love the bra story, exactly the same for me! I'm actually still wearing maternity bras from DC1 as I've only just stopped breast feeding him - M&S ones are fab.
Another fun thing to do is to take a nursery appointment at John Lewis - you book in advance but they a) give you free coffee/cake and b) offer really good impartial advice on prams/car seats/muslins etc. It's great to do with you Mum or a girlfriend..
As for food (sorry about my endless post, finally got some time on the computer!), I was diagnosed with gestational diabetes last time at 30 weeks so am trying to be as healthy as possible. Lots of high fibre and sadly less sugar (or if you're looking at it positively, more maple syrup!)...though I am of the school of the odd glass of wine didn't/won't do any harm either!