Toddler weight

My son is 2 years old and 6 months, i have recently had a health visitor come down to check his weight and height she said to me that i need to go get my son checked to GP (UK) because my son's weight is abit high, so his heights is 104cm and weight is 22kg, she has really scared me saying that and i will go to get him checked out but the thing is he isn't fat when you look at him he's just built if that makes sense and i just wanted to know if any other mums kids weight abit much and did you get this checked out or not like i just want to have some more information from other mothers and there experience with there childs weight, (btw you need to keep in mind at the age of 12 months my son was 15kg and nothing was mentioned that he's overweight plus everyone is my family is big and so is my sons dad)