First Movement?

I think I felt the little one move today!!! I was sitting at work around 3pm and suddenly I felt a little flutter in my tummy. At first I thought maybe I had some gas bubbles (I know, disturbing), but then I didn't feel any pressure in my intestines as I normally would if I had gas bubbles. So, out of curiosity, I sat really still land thought about the baby swimming around...and then I felt it again!!! The little flutters...like a little foot or arm was stretching out to touch the walls around it...it continued a few more times and then it stopped. I haven't felt any more since the afternoon, but could this have been the first fetal movement??? How wonderful...:)