I had my first ultrasound at 6 weeks 4 days( after transferring two fresh embryos via <a href="https://glowing.com/glow-fertility-program">IVF</a>). We saw two heart beats but they said one of the heart rates was slower than average (80). We go back on 8/31 for another ultrasound. They told me that since ultrasound was done early it could just be that the heart had just not "gotten up to speed". I am trying not to make myself crazy worrying as I know that can't help. Anyone have ultrasound this early and be told something like this?  I have found varying information online. Thanks in advance.