Headache and nausea at Deja Vus?

For many years, the following scenario has been occurring more often: I'm thinking of something and suddenly my head creates some link in the brain to an activity from the past. It usually comes with me to nausea, headache and shortness of breath, because I can't arrange the events in the head. Meanwhile, I take in my environment was nothing more and the nausea retreats into the chest. After a short time (up to 2 min.), I feel reasonably well again. Often it's Nintendo games (like Animal Crossing) that I think about.

Maybe you can talk to somebody about it to cope with, dearest greetings