Is that you little one?

I keep feeling a funny little sensation in my belly (well obviously not my belly but sounds much cuter than ute). It's as if there's a little fish in there releasing bubbles. Since this is my first baby I have no idea what first movements feel like .. but this has been going on now for a few days. Being 15wks3d I know it's early but what is it then??? I can't wait until I feel strong, reassuring kicks from my little one.