I have had children at 19, 27, and 31. My first DC passed as an infant, so I don't know about the age difference of 6 years between the first two, but my other two children are 4.5 years (exactly) apart, and I LOVE it!! I will also tell you that the difficulty of pregnancy increases each time (or did for me). Don't know how much of that is the multiple pregnancies and how much is the age difference (I think 19 is much easier than 31, though), but I do highly recommend giving your body a minimum of one full year to recoup before getting pregnant again. I have noticed that bouncing back from the pregnancy/birth experience has been more difficult each time, inconsiderate of the age of your children, though I imagine that having kids very close together would be difficult (and is, according to my mom).Â
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Personally, I found that I was so enamored w/ DS1 that I wasn't interested in even thinking about another one until he was about 2.5 (when he stopped nursing, actually, lol). Now, with DS2 8 months old, I'm starting to think of another one, but a lot of that is that I'm getting older and don't want to deal with "at risk" pregnancy, etc., and don't want to be an "old" parent either. I think we'll probably think about getting pregnant again when he's about 1.5, so I'll get to deal with the "terrible 2s" while pregnant and with a newborn; FUN!! But ideally I'd rather space them ~3 years.  I think having an older child will make a difference, too, so the two closer together will be slightly easier because of DS1's help. He's such a helpful big brother!!