I am not really "fearing" much of anything. I worry how AJ will react to a baby, even though he loves babies - none of them need his mommy 24-7. I worry a little about the night feedings (I fell asleep with AJ nursing when he was a new born and he rolled off the boppy - then another time either the same night or soon after I was co-sleeping with him cause he was cluster nursing a little and he ended up rolling off the bed - luckily I had folded bath towels or something and they hadn't made their way to the bathroom yet and they were on the floor by the bed and that is what he fell on). Other than that, just the day to day stuff (groceries, dinner, dishes, housework, laundry, etc) with two kids.
Oh, and in the beginning it will be quiet, but when it does get loud - you won't remember what it was like when it was quiet.

And as they get older - most of the time, quiet means they are getting into something they shouldn't.

Our life is a lot more fulfilling now than it was before AJ (and Sienna)