First movement

Caroline
Hey all! 
I'm currently 14 weeks pregnant with my first baby (it's a boy!). Last week I felt something  strange, but thought I was crazy... Today, I felt the same strange feeling... Everyone says you will feel a flutter, but I have no idea what that means, because I have "flutters" when I have to poop (pregnant or not pregnant)...  How far along were you, when you first felt your baby? I'm tying not to over analyze this. Lol. 
Thanks!