I need some advice....5w5d

Brittany

So I had some bleeding and mild cramping which I assumed was totally normal. I called the OB and she suggested I should go to ER. I didn’t feel like it was necessary but thought I should trust them. So I had an ultrasound done and showed baby in the uterus measuring correct but no heartbeat. They called it a “threatened miscarriage” and now want me to see my OB in a week so I go in on 12/26 for a follow up ultrasound. Has anyone else experienced this?!? It’s so hard hearing no heartbeat but also thinking it may be too early. Thoughts? Advice??? Thanks!!!