Diege, I can't believe it either. The time really does fly with new babies, doesn't it? Actually, I think the first year flies. I remember when my two eldest were young, and I was struggling with them in the shops, a dear old lady said to me, "The days are long, but the years are short. Make the most of it dear!" I now understand what she meant. Some days are long and hard with young children, but the years fly by and you look back and can't understand where the time went.
DH and I were talking about our 25th wedding anniversary, what we might do (it is two years away), and he made a comment about not going too far from home because of the kids. I said,"DS will be 7 by then, we can leave him with an older sibling and go somewhere exotic". DH was pleased with that idea. He is so ready to move onto an easier time of life, and I am just not 
I hate that we don't feel the same way, but I cannot change that. So I often think, it is just as well I haven't gotten pregnant, as I think it would make him unhappy. I am very conflicted about it. I know, he will be fine in the end, he loves his children, adores our youngest, but I know he's ready to move on. God knows, I wish I was! I just keep thinking that the toughest part, is the first five years, and another five years of waiting to move onto easier times, isn't that long, and totally worth it to have another person part of our family. But DH just sees the years ticking by as he gets older and more tired
Its a bloody conundrum! My ticking clock is pretty damned strong too.
My way of resolving this dilemma is to just throw it out to the universe and allow fate/biology/chance to make the decision. It's irresponsible, I know, and I am sure many women on mumsnet would flame me for behaving this way. But I suppose DH, though he thinks it is impossible for me to get pregnant at my age, is taking a risk by not using contraception.
Anyway, I hadn't planned to write all that down on this thread, it just sort of came out
AFM, not much happening here. I am not looking forward to my birthday. If I was preggers or holding a baby, I would have no trouble at all celebrating my 47th birthday, it wouldn't worry me, but knowing that it brings me closer to menopause, and further from a baby means I find it hard to celebrate.
I will put on a brave face though
. Today is a pupil free day at work, so my department are taking me out for lunch, which will be nice. Tomorrow morning I am meeting friends in town for a cuppa, and tomorrow night we are having take away Thai (I would rather that than going out). Oh, and I am off to the ballet with a friend tonight - Swan Lake. I hope I can stay awake! That's the hardest part of going out for me these days. 
Jass my eldest two are 22 and 20 (similar ages to yours), then I have 16, 13 and 5. I really need one more to even it all up!