I'm glad I found your post, Treegal! I've been having the same worries. I've tried cold drinks and sugary things, paying attention when I'm lying down or relaxing but nada for the past few days after getting some good obvious flicks last week and lots of fluttering movement the week before. I do have a doppler (hired it at 13 weeks) and fortunately I've been able to find a heartbeat, otherwise I'd be beside myself by now. I'm just worrying that the baby isn't developing properly. Not long until my appointment for the anomaly scan (Monday) but I think I'll ring my ob anyway today.
I've been awake since 4am worrying about it - and with a painful aching right arm!