My last children were born when I was 37 and 38. Hubby and I are now going down the road of trying for another one, however since he had a vasectomy he would have to have a reversal. At the earliest, we wouldn't be able to try until after I turn 40 and so baby would be born when I was either 40 or 41.
I had my first child at 19 (actually 2 days before I turned 20) and then in my 30s, and those pregnancies differed immensely. While my dd wasn't planned, the pregnancy was much easier and I bounced back easier. With my youngest dd and ds, I was on bedrest for the end of those pregnancies and they were born 6 weeks and 4 weeks premature, though healthy.
I am curious to hear others experiences. My age is the only negative on my long list of positives, and so I'm doing my research while hubby does his.