Waiting is the
worst! You'd think that with more practice I'd get better, but nooooo!
Being prayerful is the best advice.
Also praying for your future children, whomever God chooses to place in your family.
Think about doing those things that will be more difficult after children arrive, like rearranging all the cupboards in the house, paint projects, cleaning the garage, etc. If your church or community has activities perhaps now is the time to enjoy a few months of those programs as you'll find that your time is not your own when you have kids (or more, or younger, kids).
For instance, we keep to a fairly predictable schedule, with a "strict" bedtime observed every night except Fridays. So all those evening programs are not doable for us right now. Maybe in a few years when the kids are all older....