Pregnant and scared

We are 4 weeks and 4 days pregnant exactly one year after getting pregnant with our first (a boy named Davin...who we lost in a missed miscarriage at 12 weeks)!

We have been trying for a long time and now it finally happened...i dont know how not to be scared. Every pain i wonder "are we going to loose this one too?" I keep checking for spotting...we have known we are pregnant for two weeks...i still do a pregnancy test every once in a while to calm my mind (i know- irrational).

How do you stop worrying that the same thing will happen? How do you make friends with this fear? How do you embrace this rainbow baby we have prayed for so long?