I need someone to tell me if I'm overreacting...

We just went for our first sonogram to confirm the pregnancy. I've only been to this office a few times before for bloodwork and although the check in staff and lab techs weren't the friendliest I figured the office was nice and that I should just wait to meet with the doctor before forming any opinions. So the doctor comes in and informs me that my levels from the bloodwork a few weeks ago showed that they hadn't increased, that they had actually gone down and she figured I wasn't pregnant. My heart dropped. Then she asked me in a very condescending tone "have you actually taken a pregnancy test?" ......UM...YES. I told her the office had called me and told me that my levels had actually gone up and looked great - to which she just shook her head like I was lying. She went and checked, came back and said She had just read the computer wrong and that my levels had gone up. She then started to do the sonogram and told me she didn't see anything. The sonograpger came in and immediately found the baby and a heartbeat....but they had the monitor turned away from me so I didn't get to see ANYTHING. 😭 She acted surprised and said "well, it's the smallest little sack I've ever seen, but congratulations. We will see you in 5 weeks." I asked her why I might be bleeding and she shrugged and said "well there are many reasons, but since you are bleeding we will have to classify this as a threatened miscarriage." She then walked me to the lab for bloodwork and that was it. I got in the car and sobbed. I feel scared that I got basically no answers or encouragement, and sad that I didn't even get to see the heartbeat.

Should I chalk this all up to pregnancy hormones, or find a new place?