My ForeRunner picking up fetal heart beat??

Ive been wearing my Garmin ForeRunner for almost a year and a half now and Ive always been satisfied with its accuracy. Its rarely off my real Heartbeat. But today I started my weekly training on the rower and my wearable showed really odd heart rates. After ten minutes of moderate to intense training, it topped off at 90. Then it jumped to nearly 180 and I just wasnt pushing it that hard. Is it possible the fetus heartbeat was interfering?? I havent got m'y first appointment yet so Im kind of hoping that it is...