My eldest ds has commented several times over the last few months that dd age 7 has a big belly like you see in toddlers. She is a slim child tall for her age and I always said loads of children have big bellys. Tonight dd was complaining of a tummy ache around her belly button and I lifted her top up and I thought that from the side her belly reminds me of a pregnant belly. I am now stressing myself out with worry are big bellys in 7 year olds normal.