I've been feeling the exact same things. The only extra thing I have is epilepsy, but all of it started in october at the exact same time. I was diagnosed with epilepsy in november and treated for seizures and migraines. But this one pain in the back of my head, right behind my left ear will not go away and it is getting worse every day. It's worse in morning and night. I'm going to an epilepsy treatment center at the end of month because my neurologist seems worried. He won't tell me what he is worried about, but I can see it in his facial expressions. I looked up tumours as well, and I match every symptom, it's scarry!