My daughter was born weighing 8 lbs, she lost 7% when we left the hospital. The next day, she had lost 13% and today at 8 days, she lost another 1% weight. She is exclusively breastfed and is latching well. She is pooping atleast a couple times and peeing many times a day. My doctor says not to worry just yet and come see him next week. But, I am feeling so disheartened. Any advice?