When Phoebe was born she was 7lb 12oz. By the time she left the hospital she was down to 7lb 3oz. It's totally normal for babies to lose up to 10% of their birth weight in the first few days. Pediatricians like for them to gain it back by the time they are two weeks old. We took our little one in for her 4 day checkup and she weighed in at a whopping 7lb 10oz! That's 7oz in 2 days. Way to go Phoebe! And way to go Katie!