How important are percentile maps newborns? Is it really necessary to use?

Is it really necessary to use to compare the growth of your Childs other children? I ask because I have 4 months of age (born in early January of the month at 5 pounds 6 ounces and 18 inches long, and now in the age of 4 months 9 pounds 12 ounces and 22 inches long) and I'm not sure if that is all that is needed. I never really thought that most of the letters so far. I never discussed the charts with my doctor or my lactation consultant. Should I? I know that is far below the map, simply because it is a premature baby and we had some difficulty breastfeeding in the first two months. I have curiosity to know whether it would be based on what he says the list should be, because he was born premature and everything. Also, is there a table for babies with breast milk? I'm still not completely sure how the cards work in the first place.

It seems that you and I were in a similar situation. My daughter (now 6 elsewhere!) Born in 2003 in 34 weeks. It had to be induced by my blood pressure was very high, the risk of stroke was mine accidents. She weighed 5 lbs 9 oz which was too good to be six weeks before. Anyway, it started much smaller that the standard of 7 to 7.5 pounds per baby is "assumed" that the weight was still in the lowest percentiles on the cards. They use size age and weight compared to other babies and see how close to "average" of your child falls into these measures. The graphics are designed to identify Children who do not eat properly, have certain allergies (such as proteins) and not gain weight and have changed the need soy milk, or children with other disorders (Like the thyroid) that are not loaded correctly. Your doctor and ask how often your baby eats and if they are too prone to throw up (as if they have reflux acid) to identify whether there is a problem. Sometimes I take personally, but as I am accused of not feeding my baby. Do not. Your doctor knows that your baby has been rapid and try to correct a problem if there is one. And, your baby will eventually catch up with its small size. My daughter is 6 now and even if it is thin, it was not moderated by weight and especially for his size!