fed 5 week old not pooping. help?

Don't worry - the same thing happened to my son when he was just a week or two old. I freaked when he wasn't pooping. I got lots of different answers, but what the doctor said was they can go up to a week between bowel movements and still be fine. They're not actually constipated unless the poop is hard. If the poop is nice and soft, then don't worry.