Growing up, I was taught that itching was a sign of healing, so that might be what's going on inside your ear.
okay thank you that really helped!
No, there is not a high chance. The brain is well protected as it is well needed.
The skull is pretty thick. It is surrounded by fluid and a thick case of dura, a protective covering. If you look at anatomy pics, the ear structure may be in the head, but it is below the brain and to the side with just a nerve connecting the two. Yes, stuff can happen but it is not common. As for pressure feelings - those ARE common.
Ear infections are quite painful and nasty. If you are concerned about spread, please ask your doctor. And do get your anxiety treated - it is a hard way to live in fear all the time.