AIBU to be worried and get a second opinion?

[youngmum2000]

10 week old baby was weighed today and weighs 10lbs4oz , at his 6 week check he weighed 10lbs1oz and was 8lbs10oz at birth. Was told this is fine, am I just overthinking? Just worried and don’t know if I should take baby the GP tomorrow ?

No he is fine

you need a second opinion. He’s not really gaining enough. It might be nothing but it needs checking