Kiki5150,

Welcome to NeuroTalk.

PCS time limits are all over the map. The most common time for the use of PCS is 6 to 8 weeks after the initial concussion.

BUT, it does not matter whether you have been properly diagonistically termed as PCS. You treat the symptoms, not the diagnostic term.

At 11 days, you are still simply suffering from a concussion. You are also likely suffering from a whiplash neck injury that can make a minor concussion appear to be a severe concussion.

What were the concussion instructions?

What symptoms are you having?

What diagnostics did the doctors do?

What was the mechanism of injury? Rear ended? Whipped against the side window and impacted your head? Thrown against seat belts?