Concussion messing with my voice.

6 months post concussion and it is still messing with my voice. When I get excited or anxious I sound like Forrest Gump. Frustrating! Very slowly getting past it but worried it may evolve into a permanent " dialect-sound" in my speech. Had and finished speech therapy. ER said I had a mild concussion back then and go home and wait 3 weeks to heal. A month later it was not better and I sought out a
Concussion doc. He was furious ER told me that. Had several symptoms lasting months. Balance regained. Walking ok. Memory better. Fatigue still there. Pronounceation better. Still have some trouble fi ding words and use descriptive phrases to define them instead. Getting upset at lack of education about severity of concussions I was given. So much they didn't tell me.
Just kept telling me "mild". At 6 months post- concussion i don't think mild is a good word! No, didn't lose consciousness. My quest is.... at this point will speech ever be normal again????
Thanks for any input!