At my appointment on Friday, the babys heartbeat was 156.. that's exactly what I have been getting on my home doppler. And now I am getting a reading of 142-147.. And the baby has been staying directly below my belly button.. And its really difficult to hear the baby..like I have to position the doppler at a weird angle.. When before I was always finding the baby on the left side with no problem.. now its like the baby doesnt move spots ... Should I be worried or am I being paranoid for nothing?