Feeling so blessed but really scared too!

I love feeling my twins moving all over. They are very active babies. I'm trying to get everything ready early in case they come early or I can't do much later in the pregnancy. I'm scared of all that could go wrong. I have two daughters singleton pregnancies and never had anything go wrong. My Dr said that's in my favor this time. But reading some of the stories of going into early labor or having a c-section has me worried. I'm sure everything will be ok. But there is so much more to worry about this time. We still need a bigger vehicle for our growing family. And then stuff for babies. I'm getting a few things here and there.