My little girl turned 5 this week, she suffers with anxiety and is a very sensitive child, but can usually explain why she is feeling upset/angry/nervous. A few times recently she’ll just burst into tears for no apparent reason and when I ask her what’s wrong she says “I don’t know I’m just sad” and then just sob while having a cuddle with me. I’m getting quite worried about her. Are anyone else’s children like this? Is it just a developmental thing? 