It depends on birth eight. It definitely can be big, all depends on birth weight and how much was lost.
My baby was born at 8 pounds, 8 ounces and I still don't think she was big. She wore newborn for over two months. So I don't think 8 pounds at 5 weeks is considered big at all. I think eight pounds is a healthy size, as long as they've been gaining since birth.
my baby was also born at 8 weeks. so it depends on the birth weight and what percentile they're in
My daughter is 10 pounds at 5 weeks, she started at 6 pounds 6 oz so I say no. Lol. Chubby babies are the best!