When she was about 20 weeks, I can feel bubble popping inside my tummy. At first I thought it was just my digestive system or maybe it was something else about my pregnancy. I never thought it was already the baby movements. I Googled it and some described it exactly that, bubble popping.
Then at around 25 weeks, I actually saw my tummy move. As in it moved as if someone from inside pushed it. It was really really awesome.
She's super malikot. Sometimes her movements were just light kicks or jabs, and sometimes my tummy moves and deforms as if there's an alien inside my tummy.
Here's a video (she is camera shy) of my belly while she moves. Taken last July 11, 2013 when she was 32 weeks and 5 days. I wish I can capture a more obvious baby movement.