Movement!

I was laying on my back a little bit ago and I know I know  I KNOW I felt the baby move!  AHHHH!! It was crazy!  It's not like strong kicking or anything like that because the little guy / girl is only 3   1/2 inches long and tiny; it feels like something is doing the wave.  Kind of like when you go over a hill really fast in the car?  It's so hard to describe but unmistakable.  EXCITING!!!  Maybe that means I will be feeling it more and more now!  Definitely earlier than when I felt Christopher move (I think I was 18 1/2 weeks..and I also didn't know what it felt like).  But that happens with the 2nd baby!  =)