Anja,

Nobody can say whether it is concussion. But, you need to deal with the symptoms anyway. I had a similar situation many years ago when I had to drive down a rough road. It left me feeling miserable for a few days.

I think you are doing the right thing by resting but you may want to walk around the house quietly to try to get your system back to normal.

I am sorry to hear you are struggling so when you have an family event planned.

My best to you.