My dd had her 2 at 38 and 39, and many of her friends were similar, or even a little older. One friend had her 2nd at 45. It seems late now, and we're conscious that she was very lucky, but for several reasons it was the right time for her and her husband.
I do sometimes wish she'd started when I was 57 rather than 67 - I'd have had more energy - but there you go.
My other dd, although long-term partnered, doesn't want any - she's long said she'd rather have a dog.
Later babies do seem much more common now, so please don't despair!
I well remember in the late 70s being down in my notes as an 'elderly primigravida' - at 28! Though it's true that I was easily the oldest on the maternity ward at the time.