It's easy to confuse your baby moving with gas bubbles and the like. It's definately not like contractions, though, which are more cramp-like and usually hurt. (Braxton Hicks contractions later in the pregnancy don't really hurt) Of course with the bleeding I would be scared, I had bleeding with my first.

I first felt this little one moving at about 13 weeks. It starts out like a little flutter but becomes stronger as the weeks go by. The ultrasound is amazing when you see your baby moving but you can't feel it!

I'm 21 weeks now and she just started to kick it up a notch and is really starting to move a lot more.