worrying episode yesterday

I had a strange experience yesterday and I really need to talk about it. I was part of a group meeting all day, and even though I know the people well, I began to have a really unusual way of distancing myself - I began doodling. I'm no drawer, but I started making little pictures of anything I could think of. I still engaged others, but I couldn't stop drawing. I have no idea what this means, but it worries me.