I am very glad you posted this, because I am going through the exact same thing (though im 9 months post impact), I honestly just feel completely

bewildered, in the sense that I just feel off and out of it. I can focus on school work and things, but if im not focused on something I tend to completely zone

out. And the brain fog too, it's just such a hard feeling to explain. The day after my impact I had severe headaches, but no other symptoms developed until about a week after.

You will find lots of support and information here.