Hi Rhino, welcome to Anxiety Zone!
So sorry to hear you are struggling, but it sounds to me you have a
lot of symptoms that those with anxiety have. Have you seen your doctor? What about your school counselor? I would suggest you see one or both of them before jumping to the conclusion of a brain tumor!
I sure hope you start feeling better soon! Please enjoy the site and read through some of the other posts. You may find other members that you have things in common with that could be a great help to you!
Again, welcome to Anxiety Zone!