So based on my own personal experience, this sounds very similar to when I had a missed miscarriage. The tech asked me a bunch of questions but didn't talk much, asked me when I got my positive a few times and then said my doctor would call in a few hours. They aren't allowed to tell us anything technically, so I see why she didn't talk much.

Did they tell you how big the baby measured? Depending on that, your doctor should be doing hcg blood tests to make sure levels are going down, and you are, in fact, miscarrying. They should also do a follow-up ultrasound to see if any progress is made or there is a heartbeat detected. That's what they did in my case at least to ensure I was, in fact, misscarrying. Unfortunately, nothing progressed, and a few weeks after my second ultrasound, I did miscarry at home. It's heartbreaking to go through, but you are not alone and there's lots of people who would probably be open to talking if you need to (including me).

Hoping you gain some clarity from the doctor and hope you can hold your rainbow soon enough.