Also I think one of the big reason's your stomach starts hurting is
that you start thinking about what you need to do. And you don't
exactly have anyone to talk it out with. So you just keep inside
your head and body so it makes your stomach hurt, instead of your head.

So I think when you start to get anxious and need to get rid of the
thoughts you have a stomach hurting. I think its partially a sign
you are thinking of something that you don't want to do or are
not liking to do.

I hope things are good for you.