Hi,
It doesn't sound like your little one is far off course, and it doesn't seem like your Maternal and child health nurse is very concerned.
I wonder, how much did your little one weigh at birth? What was the birth l ike? Usually babies gain 150 plus g per week in the first 12 weeks. But after that weightgain slows to *about* 100g per week - range being 70-120g per week. So there seems to be only 1 week that was a bit out of the ordinary - but then is there any particular reason you are weighing weekly? Usually at this age babies aren't weighed so much - you go on their general health and well being. Has she been well lately?
I wonder what you and her dad are like? Big people? At some point babies do have to grow to their genetic potential. It is normal for babies to cross percentiles - upwards and downwards. If your baby is anywhere on the growth charts she is normal. At some point we have to accept that they will be what they will be. I doubt your doctor will suggest formula. Just check that she is generally healthy. If he does, a useful question to ask is "why?" What would he be trying to achieve? And *why*?