Does not crawl and put things in mouth

My son just turns 9 months, but she still didnt crawl, and she doesnt not put anything in her mouth by herself. Should i be worry?

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Tulis jawapan

Try to search baby's development in google. There's a lot of blog sharing info on baby's development according to age. If you are going to the gov clinic, you can always check the baby's book to find out.