Medical Question: Brain Tumor?

I seriously doubt you have a brain tumor. Actually if you go to a doctor you could show him the text of your question. It describes your situation pretty well. You write well so are most likely an intelligent person. I read your question thoroughly. Your symptoms, emotional, cognitive and physical really do sound like something a lot of teens are going through. One possibility is you have ADD(attention deficit disorder) which is treatable. One suggestion I could make: Try to organize your life a bit better. Something a lot of us older folks could do also. What I mean is regular meal times. Plan for and set aside a block of time for homework. Also some free time just for doing whatever. Plan on a specific time for bed on weekdays and maybe an hour or so later on Friday and Saturday. Doing this would help you feel more in control of your life. I know these things are easy to talk about but hard to put into practice. I went through a lot of the things you are experiencing. I even thought my parents were real dumb and did not understand me at all. I felt annoyed and that they were just prying into my life. Really understand that they love you and only want the best for you. If you feel a doctor or therapist could help, then by all means don't hesitate to ask, if only to set your mind at ease. I could say a lot more but you get the picture. When I get started answering these questions I sometimes get carried away and end up writing a short story. Good luck.