Is my child okay, complaining of a stomachache every morning?

I am worried because my child says their stomach hurts every morning these days. They say it hurts around the time they wake up and get ready for school, but sometimes it gets better after a little while.

I didn't eat anything particularly strange the day before, but since this keeps happening, I'm wondering if it's a digestive issue or due to stress. I'm also worried that it might be because I'm nervous before going to school.

I would like to know if morning stomachaches are a common symptom in children as well, and if it is necessary to visit a hospital for an examination. If anyone has had a similar experience, please advise on the reasons and how you resolved it.