lunavix - how often does she bf during the day ? Does she also feed at night ?
Can you tell us her weight as it stands now ?
Kellymom has a very good chart based on the unicef charts and unicef now have a new chart for bf babies. It may be worth looking at these to put your mind at rest.
I don't know if HV's are giving out the unicef charts to bf mothers, if not, they should be.
The myth among HV's is that baby rice helps a baby put on weight. It doesn't. I can't see why on earth a 19 week old should go on baby rice.
BM is the fattiest thing - well may be apart from lard - that you can give her. I think the first recommendedation should be to bf more often, if you can, and see how it goes.
I actually stopped seeing my HV when DS was 3 months old. One gets fed up of hearing rubbish. I bought scales and to this day weigh him every few months at home. I also ditched the Red Book chart and always used the unicef chart.
My son went from being on the 50th centile at birth, to hovering between 9th and 25th. At 2.5 yo he is still on the same line.
He is short and quite skinny (apart from an amazingly beautiful chubby cheeked face !)compared to many other boy toddlers. But that is because his mum is a short arse not beacuse he hasn't had enough breast milk !
I held on without any problems until he was exactly 6 months old, never bothered with baby rice, went straight on to fruit and veg. and very soon afterwards to chicken and meat in order to pump up his iron level.
In conclusion: as someone else has said, if she is alert, active and healthy, and it is just a case of SLOWING DOWN in weight gain, I personally don't see a problem. I would only get concerned if a baby didn't seem healthy. I would just try and get more breast milk into her, if at all possible.