I think after 28 weeks is when you can start doing 'kick counts' because the activity is more predictable... I will be 30 weeks Monday and I have *definitely* noticed that sometimes this baby has busier days then others, even when my activities are the same every day. Some days the movements are more gentle and pensive, some days it seems like Spawn is planning its escape, lol.
Also, I am not sure how carrying *twins* would affect that... I mean, they are going to get crowded sooner and I don't know if that would make them wiggle more or less... any mamas of twins who can comment on that?