Received my fetal Doppler in the mail today and me and my coworker, who used to be a nurse, tried it out. Found the heartbeat after a few min but it was at 120ish and would go down to around 108. I read that a lot of women have that problem with the at home dopplers and when they go to the doc it's 150. Should I panic or just chill out? It needed to be charged so we figured fully charging it would help but the low heartbeat worries me. At my last apt the heartbeat was 156 so that's a big drop. I'm 14 weeks and 3 days today and we go tomorrow to find out the gender