I am supposed to be 10 weeks pregnant. Ultrasound yesterday measured the fetal pole at 8 weeks 3 days. On a previous ultrasound, 2 weeks ago, heartbeat was 160 but they could not find any cardiac activity yesterday with abdominal or vaginal ultrasound. Is there any possibility, no matter how small, that maybe the heartbeat was just missed and that I could still be carrying a healthy babe?