I have one - I first felt movement at 14w6d, and felt heaps for two weeks, then not much for two weeks, then it kicked back in and hasn't stopped since.

I remember one day though, I'd just been for a huge walk, and I sat down afterwards, and there was just this absolute frenzy on the inside; I realised I was feeling kicks, and not just wriggles or flutters. That was at about 20-21 weeks. It'll happen soon, and you'll get heaps!