I had the usual fears with #1 (SIDS, sleep, nutrition, etc.), but now with #2 have relaxed a bit, although I do get really stressed out any time any one of them is sick. Now, my biggest fear, if you can call it that, is I won't "do right by them" --possibly somehow shortchanging them in the choices I make, not being able to give them the right guidance, etc. Vague, when put that way, but it's something that I think about constantly.