Hi, Colia. I just turned 40 on July 1 and some time this week, we will start trying for our first! (And probably only.) As soon as I told my doctor about this plan, she sent me to a fertility specialist so they could begin testing me "just in case". I've gone for all kinds of blood tests, and they've confirmed that everything is still working properly. I've also been taking folic acid for about 6 months now. So, I guess I don't really have a lot of advice, but you and I are basically in the same boat, I think (you don't have any other kids, right?). I know several other people who have started a family at around this age, and everything has been fine. I think it keeps you younger, longer, too! Good luck to you!