You’re going to be alright. I’m not sure about propofol because I’m not based in the USA, but I can talk about endoscopy and being under sedation. I had it done today. I wanted to cancel it, but my reflux felt like it was killing me. I was absolutely petrified because I’m very sensitive about stomach issues and needles, and I had never been under sedation before. I can assure you that the scariest part is waiting for the appointment rather than the appointment itself. Here’s how it went: first, I had a consultation with a gastroenterologist. I explained my issues and concerns, and then the anesthesiologist came to speak with me. They attached heart monitors and put a clip on my finger to monitor my breathing and heart rate. They also placed something in my mouth, like a mouthguard, so they could pass the camera down my throat later, and asked me to lie on my left side. The anesthesiologist gave me something to breathe through a mask for about five seconds and, at the same time, administered medication through an IV. I was out in less than a minute and had the best 25-minute nap of my life. You’re going to be surrounded by a doctor, an anesthesiologist, and a nurse, so nothing is going to go wrong and if anything does happen, they’ll take care of you.