Question: Scared I have a brain tumor. 26/F

My symptoms:
-hypnic jerks when falling asleep.
-Déjà vu sometimes multiple times a day
-Disorientation/not remembering who is in bed with me. Only happened one time, Lasted 15-20 seconds
-Feel off balance/floating feeling. Never have fallen though. Doesn't happen when sitting or pushing something while walking (stroller, shopping cart)
-disequilibrium for a second or two. Never have fallen. Started around 16 years old. (10 years)
-headaches - sometimes when I wake up in the morning, but not often. Mostly occur in afternoon/evening once or twice a week. Pain is in back if head/neck/shoulders. Usually relieved by drinking caffeinated beverage or taking aleve. Sometimes I don't need to take anything. Sometimes worse going from sitting position to standing position or after intense exercise, but again, not usually bad enough to take any medicine for it. Not worse with straining.
-brain fog/difficulty concentrating/forgetfulness.
-floaters - I've also had since I was 16 (10 years)
-phantom smells - usually pleasant smelling - usually perfume. Comes on as a strong smell and lasts a few seconds. Had for 3 years now.


Medical conditions:
Hypothyroid - controlled with meds
ITP
IBS-D
Health anxiety (hypochondria)

Medications:
Levothyroxine 50mcg
Amitriptyline 10mg
Prenatal vitamin

I had CT scan done in January 2012, so a little over two years ago for phantom smells. All clear/normal/negative.

What is the liklihood this is a brain tumor? Really scared! Could all of this be from my anxiety?

I saw my endocrinologist for my routine thyroid appointment and he did a neuro test on me (eyes tracking together, reflexes, squeezing his fingers, turned off the lights and looked into my eyes with his bright light, ect) and he said everything looked good in regards to brain tumor and that I shouldn't be worried, but I still am.