Hi Spidermama. My ds3 is 6 months old and last weigh in (2 weeks ago) he was 21lb 7oz. He is on the 98th centile for both height and weight and yes he is big. But I don't worry. Like you say about your little man, he is in proportion. He has his chub, but I'd much rather have healthy chubby babies than skinny waif-like ones!!
He was only 7lb 12oz at birth and I only started weaning him at just over 5 months, so I don't feel he is big due to overfeeding.
He is just gorgeous! And so incredibly good. He has a smile for everyone (even newsreaders on the tv - lol) and sleeps through the night. He is soooo placid. I wouldn't want him to be any different.
The thing that annoys me is everyone elses comments when they see him, especially the MIL. My SIL has a 16 month old who is on the 9th centile for height and weight, so there really isn't much between him and my ds. But they said that ds2 who is now 2 was enormous.(A slight over reaction I feel) He was quite a big baby, not as big as ds3 is, but not small either and now he is so skinny and definately not the tallest 2 year old (that may have something to do with him being very fussy about food though ) It just feels like they are criticising him in some way every time they mention it.
Your little man sounds absolutely gorgeous to me and I wouldn't worry about him. Get him checked out if it still worries you by all means, but I bet there is nothing wrong there.
Ooh I just love gorgeous little chubby babies In fact I'm gonna go and give my little bundle of chub a kiss right now!!!