5mon sice concusion,what would cause me to constantly worry about my health and be focused just on that?can recognize myself,scared to go out?its hard

Clarify 1st 2 words: I'm not understanding the first 2 words of your opening statement to your question. I get the idea that you suffered a concussion. Therefore, perhaps you are having recurring thoughts or feelings about whatever caused that traumatic incident? I don't know your history as it concerns psychological issues but perhaps you suffer from generalized anxiety? Seek out a health professional for help.