I think the other ladies have described it similar to how i would. With my first I didn't notice all the little "bubbles" because I wasn't sure...but one day at work I was just sitting there and got the biggest "twitch" I guess like a muscle spasm in my belly that was so distinct it actually startled me and I knew forsure that was all baby!

Now (at 14 weeks) I feel lots of bubbles that feel like baby movement, but it is usually followed by gas or my tummy growling so I am not calling it baby movement yet, just wind.

Yay, for baby movements, it's soo exciting and reassuring to feel ur little one moving about in there.