sorry for bit of a hijack here but wanted to add my bit about bad advice from both mw and hv.
I didn't have a small baby, dd1 was 10lbs 2oz at birth, mw told me that I wouldn't have enough milk to feed her and would need to use formula top up, hv told me I would have to have her weighed weekly to make sure she was gaining weight and she too mentioned formula top ups.
I became slightly paranoid about my abillity to BF [huge understatement emoticon] that for first 12 months, I kept a diary of all her feeds, wet and dirty nappies, just to prove to myself that I wasn't starving her.
We'd moved before dd2 was born thankfully, when hv saw her weight gain, she told me I didn't need to have her weighed every week as they would normally do for bf babies!!!
We all know bf is best for babies so why are mums made to feel guilty about having small babies/low weight gains when you are exclusively BF?
Give 100 people the same food to eat and some will gain weight, some will lose weight, we are all different, it's the same for babies.
The red books do not take into consideration parental weight, height, race, all of which have an influence on how slowly or quickly a baby will gain weight.
We tell parents that the "ideal" weight gain is 3-4oz per week but the best way to tell if a baby is having enough milk is the number of wet and dirty nappies per day, if the baby is settled after feeds, is happy and reaching the appropriate milestones.
as a mum you know your baby the best, trust your instincts,