Massive congrats, Kirsty. I'm nine weeks this coming Wednesday, so we can count down together
I won't lie, with OH away so often I'm mostly going through the day-to-day of this pregnancy alone, and I know that there will still be lots of separation once the sprog is here... but we're both committed to making it work and we simply couldn't be happier. I've done single pregnancy/parenthood before - I was a single mum to my eldest until he was 4 - and this isn't quite the same. I know it's early days yet - so maybe we'll talk again once I'm doing the midnight nappy/bottle shift! But for now I can say that, even though my OH isn't here in person, I know he's out there, thinking of me and supporting me, and I know that if there were a really big issue of some sort he'd be home like a shot, and that does make a big difference. Obviously it will be hard, dealing with things on my own while he's away, but I know I can do it.
Parenthood does have a way of shifting all your goalposts in one go, so you and your OH should sit down and have a serious chat about the how and where of it all. But whatever you two decide upon, you can make it work if you want to. And remember - civvies don't get it, no matter how well-meaning they may be.