OB did a doppler today, she said she probably couldn't find the heartbeat (I'm 12w5d) so not to worry. Found it right away in the left side at 164. I asked her about the US (possible hidden twin in US) and to look around. She found one right in the middle but it was 161 HR, she said the baby just moved. Cause she went back to the left and couldn't find the previous heartbeat. She said just one baby then laughed and said but I've been wrong.... What do you think, one baby that just moved or two babies?????? I'm perfectly happy with one healthy baby, I'm just wondering what you ladies think.