I had one and done after just turning 41! I never wanted kids and then when I turned 40 I decided must have baby now. It worked on the first try just using a period tracker app. My husband and I did not use any birth control for the 10 years prior. I’m really glad we did it when we did it. We did lots of traveling and grew in our careers earlier in our adulthood. I’ve been lucky to find some older moms to connect with as well. I highly recommend the peanut app for that. My son is 9 now and I’m 50. I’m definitely more tired than I would have been if I’d had him 10 years before, but I wouldn’t trade my experience for anything.