It's on my mind.
I visited the OB/GYN yesterday, since I hadn't had an "annual" in over two years (I don't know that I really needed one, but it helps on the wellness forms for insurance rebates, so I went). When my doctor asked if we were using any sort of birth control, I said "not a whole lot" since I am still breastfeeding and hadn't had a period since before Peter was born. He high-fived me and said his wife went 15 months postpartum before her menses returned after the firstborn.
Good Catholics that they are, I wonder if they did the whole Kippley thing. I've been reading Breastfeeding and Natural Child Spacing: How Ecological Breastfeeding Spaces Babies and realize that I've been practicing, for the most part, "ecological breastfeeding." My chance of getting pregnant before my first postpartum period is less than 6%, which makes it easy to ditch standard forms of birth control.
Yet there are times, even knowing that I probably won't get pregnant, that I insist we use some sort of protection. It's usually after one of those "ten tantrum" days when I'm thinking that a five-year spacing between kids might be even better than three.
And I'm beginning to question that. More later.