So I just noticed tonight that my belly button was moving! I am 17 weeks pregnant with my first child and I'm still not really even showing..... I haven't felt any kicks or anything yet that I know of but tonight my belly button was moving.  It was just like small waves only on my belly button and it didn't feel like anything.  Could this be the first signs of movement? Or is there another reason for this? Has anyone else experienced this or gotten any information from there doctor about it?