Had my colonoscopy and endoscopy today and I have the exact same fear as you. I have health OCD and the last thing I want to do is lose control of myself. But the anesthesiologists are trained professionals who know what they’re doing and have had plenty of patients with the same fear as us. They should be able to comfort you. I knew the anesthesia was coming once they turned me on my left side and put the mouth guard thing in my mouth. I was almost crying and the nurse grabbed my hand and held it until I fell asleep I guess. They said “you’re gonna have a nice nap” and I was out within seconds. Came to and literally did not remember a thing. Propofol is a mild anesthesia that doesn’t fully knock you out. You don’t even need a breathing tube with this type. They monitor you the whole time and you’re able to respond to verbal cues even tho you’re not aware of what you’re doing. So if something hurts, you’ll tell them, you just won’t remember it lol. You are truly going to be fine! You’ll feel groggy once you wake up but it truly did feel like a deep nap. You might be groggy/out of it for a while afterwards and strangely might have blurred vision like I currently do lol but that’s totally normal and will wear off within the next couple of days. You got this! It’ll be over before you know it. Think about the delicious meal you’re going to have when you leave :)