Unconfirmed Miscarriage

Just went to the ER due to cramping and bleeding blood clots, just started earlier today and was confirmed I was 5weeks 3 days just yesterday but had these symptoms, ER told me that they cannot confirm if it is a miscarriage until I follow up in 11 days. Has anyone else had these symptoms and continued to have a healthy pregnancy? I have had a miscarriage many years ago but they were able to confirm on ultrasound but today they said they can still see yolk sac and my hcg levels are normal for being 5wks pregnant. I’m very concerned and just wanting to know if anyone else has experienced this? Thanks.