Quoting FutureMommyof2:" Is anyone else feeling lots of movement? My hubby even felt it for the outside last night! My placenta ... [snip!] ... placenta is posterior so I'm sure that helps. I seriously have felt like I have a Kung fu panda in my belly for the past week!"
I have started to feel movement in my belly as well, and from experience having been pregnant before I can tell the difference between a gas bubble and a baby.
Its usually when I'm lying on my back, but other then that I can't feel the baby throughout the day like I will in about 8-10 weeks.