My son weighed 8lb 6oz at birth, lost 5oz on day 5 and has lost another oz on day 10. My midwife said not to worry this can be normal just need to weigh more often and feed whenever I can which I do! He is on 3-4oz of milk on demand and feed when he is hungry... he isn't showing signs of diarrhoea, upset tummy or anything like that, he does have bad wind so i give him infacol which helps him release it maybe that was what made him lose weight as the gas in his tummy was stopping him from taking another oz of milk? I am just really concerned i am doing something wrong :( he is formula fed.