Measuring small

Laura 👩🏼👩🏼🌈👦🏻🌈🤰🏻

I had my 1st US 1 week ago. Measured 5w 6d, HR 105. Went in today and measuring 6w 3d, HR 122. We miscarried in Sept and I’m so worried it’s going to happen again. Has anyone had this happen? What was the outcome? We don’t go back again for 2 weeks.