Hi all, I am worried about my babies weight gain, he was born on his due date and weighed 9lbs, he is now 21 weeks and only 15lbs and I am worried this is not good weight gain. I’m sorry but I just don’t understand centiles/when I should be concerned about them so I am attaching his weigh graph for reference. I spoke to the HV back in January when he was 13lbs but they were understaffed and couldn’t send anyone out for weighing (and our area does not do drop in weigh sessions) at the time that I spoke to the health visitor, she told me to keep a close eye on his weight, as he was hanging on by a thread but had nearly dropped to centiles, which is when they would be worried… can anyone please advise before I call the health visitor again? Thank you!
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Although he’s dropped, from 3 to 5 months he’s been consistently on the 19th it looks. My boy was 15lb at 8 months so I wouldn’t worry too much. It doesn’t even out until around 6 months so it’s going to be up and down xx

Percentiles are not like percentages on a test in that you want to get as high a score as possible. Some babies are big, some are small, some are in between - just like adults!. Yours just happens to sit around 20th percentile which means they are bigger than 19% of other babies, but smaller than 80% of other babies. Nothing wrong with that so long as they are gaining weight and following the line well. But definitely give HV a call if you’re concerned. Hope that helps!

My little boy was 10lb 5oz when born and dropped a few centiles over his first month. By 20 weeks he was 16lb 4oz. I wouldn’t worry too much - I was told sometimes babies are born bigger than the size they are ‘meant to be’ and their growth levels out as they get older to what it should be. He’s 2.5 years now and his growth is absolutely fine. If you feel like something is wrong always call if you’re worried though x

My boy was like this, very slow gainer and not much of a drinker but he soon made up for it when we started weaning. He eats like an animal now but is still tall and skinny, it's just his build and nothing to worry about. As long as baby is otherwise well and content I wouldn't worry