Emotions and feelings can be complicated and confusing at times - sometimes all your child may know is that they don’t feel right in themselves.
If they are struggling with how their feeling in certain situations, it's not necessarily because they have a problem, or because something is wrong. We all have moments where we find it hard to understand our feelings, and they need to know that this is okay. Instead give your child permission to feel whatever they need to feel in that moment and then support them to find positive ways to look after themselves. You could encourage them to look into finding a new hobby, to focus on self-care or simply encourage them to speak about how they are feeling.
If your child is not sure how they feel, here are some websites and downloads that you might find helpful.