The past few days I have experienced what all the websites call "fluttering" but I just attributed this feeling to gas. This morning, there was a distinct knock from within my uterus! There is definitely something in there!! This is starting to feel more and more real everyday. Through all my ultrasounds, I keep forgetting that what I see on the screen is actually going on in my body. This was a nice reminder that I am actually growing that little critter.