Wii games

I had my PM put in last December. Last evening I was playing the Wii game with my family and started feeling light headed. When I stopped and took my pulse, it was low (54). My PM always keeps it right at 60. I read the Wii instruction book and it does say it can interfere with pacemakers. Has anyone else had this happen? It is only certain games, or all Wii games?
Thanks anyone for your comments!