Do you get used to the Nintendo 3ds 3D effect?

I recently bought a 3ds and played it last night, and woke with a headache and nausea.

I play the 3DS for hours with the 3D on and never have I had that problem. You might just have some health issues when playing games?

Nintendo 3ds Press Conference on July 19th, One Piece: Unlimited Cruise in Europe in November