Really worried if i have a brain tumor?

Hi! I am new on here! I am 14 years old, I had anxiety for a little bit now, but it has gotten really bad this year. I always had headaches, but from February they have gotten more constant, but they are still on and off. Two weeks ago I had this intense pain on the right side of my head that lasted 10 minutes. Today, I got the same intense pain but only for 5 seconds in the same spot. I also have these weird head pressures. they go all over my head and I'm really worried about them. when i shake my head up and down, I have this weird pressure on the top of my head. In addition, I have this weird eye pressure/strain sometimes. I have glasses with really little prescription, and nothing really seems blurry, just the pressure. I've also head this weird lightheadedness feeling. It is on and off and it's not too bad, but it's there. Lastly, I can't tell if I am off balance. My friends say I am walking and doing everything fine, but I am so scared. I had these symptoms on and off, but am really scared. 

I've also had these weird muscle twitches/spasms all over my body, mostly when I am thinking about it.

Hi Jane, sorry to hear you are suffering. These do sound like the symptoms of anxiety. You are of an age when you’re menstrual cycle can cause headaches and light headedness aswell. Keep a diary of your cycle and your symptoms. You may also want to ask your mum about visiting the doctor. They can give you a general check over to make something like an ear infection is causing this. So many people on this site think they have a brain tumour, so don’t feel alone in that. Anxiety over health is very common. Is it school holidays? Make sure you get out and distract yourself. I find that not focusing on a health problem tends to make you forget about any pain you think you have and you find that your brain has been manifesting it. Get back to thinking about One Direction of whoever the kids are listening to these days (oh dear I’m getting old!)

Thank you for your reply! I am on spring break and the past few days my friends have been over so I felt kind of better. However the left today and I began to get scared again. Im really scared when I am shaking my head and feel a weird hard pressure in my head