My dds are currently 5yo and 2yo. I am 31yo.
I found going from 1-2 children a doddle at first: dd1 was a calm and pleasant 3yo and dd2 was an easy going baby. Life with a 4yo and 1yo was pretty plain sailing, too, but we now have a very sulky 5yo on our hands and a tantruming, hitting-machine of a 2yo. For as wonderfully as they get on sometimes, they also squabble and fight terribly. I sometimes want to lock myself in the cupboard under the stairs

See, I'm asking partly because I would like reassurance that it gets better. Also, I think I am feeling broody for another baby but (amongst other things, like getting pg and giving birth again, and needing to move house) sometimes I think it would be crazy to add another baby-toddler-child into the mix.
(Hope this post makes sense).