Yesterday I did a scan at 8 weeks. Fetus was measuring only 6.4 weeks. And heartbeat was very low, only 84 bpm. Today I went to the doctor with the scan report. She was not happy and said I would likely miscarry in the coming week. She told me to take an HCG injection. If there is no bleeding, they will do another scan. Did anyone have a low fetal heartbeat at the beginning?