My baby s weight is stable when she has 1 year old til now (9 kg) .she s now 14 months and a half.is this something should i worry about?

Growth: At one year average weight is 10 kg. From 1 year age food choice changes, the child starts walking, becomes more physically active, vit. D milk is introduced, etc. So weight gain slows down little, then the child catches up in 1-2 months. Make sure she is active, eating and drinking well. Unless she is sick, you can wait until 15 month visit. If any more concern, talk to her pediatrician.