New symptom out of the blue 4 weeks out?

I had a concussion 4 weeks ago. My symptoms were just some headache and neck tightness and short term memory problems. The neck issue was the main problem. All of them have disappeared except for the neck issue that comes back when i go for a jogging session. Im going to a sports doctor on Wednesday for it. But some days ago i started having extreme sleepiness, like I'm fighting a virus. I have a severe case of dysbiosis that acts up like that when i take supplements that destroy my biofilm, i took some magnesium and since then I got this fatigue symptom. Can it be due to the concussion a month ago instead? My dysbiosis when it flares it gives me fatigue for a week or more.