Still can’t believe it

I’ve never been pregnant before and I know realistically I’m pregnant because I’ve had 3 positive tests and I had just bought all of them. I had also tested 5 days before I got my positives and it was still negative. I wasn’t convinced so I waited 3 days and tested again and it was positive. It’s been about three weeks since then and I’ve had just about every symptom you’d expect from this pregnancy aside from consistent morning sickness. I scheduled my first appointment but they didn’t have anything open until the 26th, I guess I’m just anxious and can’t stop thinking the worst. I know it’ll most likely get better when I see the little one on the ultrasound, even if I have to wait for another week or something to see anything, but it seems so far away and I just keep thinking that maybe I’m not pregnant despite my positives and that I’ll be extremely upset when I go to my ultrasound or they’ll tell me I’m not pregnant 😭 I’ve got pretty bad anxiety and I know I need to just stay calm. I just needed somewhere to vent, and my boyfriend doesn’t understand my thought process here 😩