So I'm new to the forum after reading other people's posts for quite some time.
So here are some of my symptoms first of all:
-Headaches
-Dizziness
-Shooting pains
-Feeling like I'm going to faint or pass out
-Twitching and vibrating (Usually in the hand)
-Unsteadiness
-Derealization
-Depersonalization
-Feelings of unreality

So that's just to name a few, and I also have an EXTREME fear of brain tumors or cancer. So now on to why I'm here; I was sitting down petting my cat, when randomly everything started to feel a bit surreal, and I said something pretty random out loud, and I can't remember the reason I said it quite well, I really don't know, my brain follows a lot of trails of thought that lead to nowhere, But then I was thinking to myself immediately after, "wait... Why did I say that?" and then as I began to wonder everything became intensely surreal and odd feeling, like I was losing it. I was saying to myself at the time "Okay I'm definitely going insane this time or having some sort of seizure from a brain tumor". I can't even explain the feeling really, it feels like my field of view got pulled back and distorted (It didn't really, but it just... Felt like it), and after that brief but extreme feeling of unreality I immediately began panicking, the most I have ever felt. My brain was constantly scattering trying to figure out why I said the completely random phrase amidst the panicking. Now the only thing I can think of is that I have a brain tumor or I'm going insane, and I can't shake this worry. So if someone can put my mind at ease a bit it would be greatly appreciated.

Also on a last note, I'm 15, so I know the probabilities of a brain tumor are low.