I felt something like little bubbles low in my tummy when I was 14w, always at night when I was lying on my side. I felt them about 4 times. I didn't feel movement until 19w, and then it just felt like wind, but a bit tickly, I still wouldn't have sworn it was the bub. I felt proper movement at 20 and a half weeks, again a bit like wind, but a bit 'lurchy' if that makes sense.