I am off to bali next week and am 20.5 weeks pregnant. Have got a fetal heart doppler (for those that dont know what it is, a machine that allows you to hear the babys heartbeat and also displays the actual heartrate heard). It comes in its own box with ultrasound gel and is run on a 9volt battery. I really want to take this with me does anyone know if I will be able to take this to Bali with me? Will I be pulled up at customs if they dont know what it is? Any advice would be appreciated as also heard you have to be careful taking things that runs on batterys.