I suffered absence or petit mal seizures when I was a high school sophomore. Your blank outs could be seizures or then could just be those common PCS moments of confusion.

Blank outs can also be triggered by a startle or other sudden stimulus.

Have you been able to lower your stimuli and stress levels?

That is the most important.

Are you getting quiet rest?

Some of us will experience an anxiety attack from over-stimulation or startle. Others experience the other end of the spectrum and go blank for a moment.

Have you had anybody observe you when you have these blank outs. Their perspective of your event will be helpful to understand what is happening.

You may think it is only a second or two but an observer may notice it is longer. That would be valuable information to relate to a neuro.

As long as you are not putting yourself and others at risk by driving or such, I would try to get quiet rest and see if it resolves without getting too anxious about it.

Try to remember that you are still very early in your concussion recovery. Most doctors would not even want to see you yet. If these events are still a problem at 6 weeks, it would be time to see a neuro for some diagnostics like an EEG or qEEG.

My best to you.