I have an at home doppler and I am 12 weeks 1 day. I don’t know if I’m even finding the heart beat but I can’t actually hear it.. only mine. Well, for like two seconds the heart rate jumps to 170-180 ish and the little Herat symbol on top starts beating fast. But then it goes away and is extremely hard to find again. Is this baby? She’s just so small right now it’s quick and hard to find?