How rare is it to get a brain tumor and do I have a brain tumor?

I've been experiencing (I wouldn't say a headache that's painful but minor) headaches at the back of my head for about a week. It's been going on and off and it feels better when I rest. No nausea, vomiting, trouble speaking, blurry vision, nor anything that interferes in my daily activities. I do play a lot of video games lately and at night I always watch youtube on my IPhone. (Close to my face) Like i said its not painful, i can deal with the minor feeling but its just annoying. The only thing I have to say that makes me concerned is that sometimes it feels like there's pressure behind my eyes and nose. And the ache in the back of my head sometimes feel sharp but not sharp to a point that's not considered painful. It's minor and bearable. And lately I've been having a bit of anxiety last couple of months and i don't know why it's back after two months of its absence. I asked my family and we never had a family history of brain tumors or cancer, or diseases, or health problems that are serious. But lastly that symptom that bothers me is the feeling that out of nowhere I get super hungry and I get chills throughout my body. Wondering what that could be. So to put it short [Insert Title Here] Please help god bless

Brain tumors are very rare. The head pain sound more like sinus headaches caused by weather and air pressure changes. I'm a sinus and migraine sufferer for many years, so I understand your concern.

It is proven by the medical community and medical research that hours of video games and watching small screens can cause head pain and anxiety. You vision and brain is being overstimulated, which also affects your ability to get a restorative nights sleep.

Cut down on the time you spend on the video games and You tube watching, especially close to the time you should be falling asleep, teens need close to eight hours of sleep every night. I bet you will feel better in a few days.