Yesterday, 10:27 AM
It is normal for weight gain rate to vary (not be the exact same every week.) Like you, I think it is also normal for gain to slow or very temporarily plateau if baby is ill. But we do not really know if the vax made baby ill, or baby simply caught something at the same time.
My guess is the pediatrician will look at overall gain, other growth indicators, and overall health, and not just focus on one or two weeks of gain. At least, I hope so.
I do not know what kind of growth charts are used in UK. Generally it is suggested that the more recent (2006 I think?) WHO charts are more accurate as they are based on healthy, normally gaining children from many different populations around the world, (and so, allows for genetic differences in growth) and was based entirely on breastfed babies.
If since baby was born slightly over 2 months ago, your baby has gained a tad more than two pounds total, I do think that is very possibly going to raise alarms about gain no matter what chart you use. If this occurs, The question then is, what do you do about it? Ounce per ounce, formula is no better than breastmilk in helping a child gain. If a breastfed baby is not gaining normally, then it could mean baby is not getting enough overall milk to gain normally, or it could be that baby has some underlying health, nutritional or growth issue going on. The problem is, all to often when a baby is breastfed, formula is thrown at the problem rather than working with...