Although statistically speaking it's much more difficult to conceive from the late thirties and on, I still wouldn't worry about being out of the running yet. I think my cut off for trying to conceive would be age 42 because I simply don't think I'd have the energy to keep up with little ones after that age. I think it's probably pretty common to get the baby bug as your little ones begin to get older and as you realize you're approaching that 10 year getting older gap that Joanne spoke of. All it takes is a few all nighters with one of my dc during a bad cold, a few off the chart temper tantrums from my dd, or a few hours of bickering for me to realize that my two are terrific... and plenty. LOL!! FWIW, though, my dh's grandmother had 3 of her 4 dc in her forties (the last at 44). All were healthy and a lady at my church was pleasantly surprised and shocked when she realized at 47 that she hadn't started menopause, but was pregnant!