Congrats!! Something to think about to relieve your fears about how tough these little ones can be- I threw my DS into the ceiling when he was two weeks old. Three years later he is happy and healthy.
Now to explian- We had a part of the ceiling that was lower than the rest of the basement by 6 inches or so. I changed his diaper and I was standing where there was more clearance. I usually lifted him up over my head and brought him down for a kiss as a regular routine and brought him up that time, and you guessed it, right into the ceiling. He had popcorn imbedded in his little head. I brought him down, and held him close and RAN to Dh who was in the yard and said "Oh my god I killed him" It took more than 30 seconds, but he let out a scream that I will never forget! He was fine five minutes later as I picked popcorn out of his head. The nurse I spoke to in a panick said he would probably be fine, and he was. Those babies are made of strong stuff!!!