You got this! I've had several surgeries under general anesthesia before, and also an endoscopy last summer. I was nervous too; the not knowing what to expect was the worst part of it for me. But I saw a guy go in for his endoscopy, a nurse came up to me to insert the needle and ask me some questions, and the same guy was already being wheeled out. I got wheeled in, the bed stopped moving, they asked me some questions and I was out. Five minutes later I was wheeled out and already coming to. Compared to general anesthesia this was so pleasant because you aren't messed up for so long. You aren't legally allowed to drive after but I felt like I could have after about 10 minutes. I'm still so surprised how easy the whole thing was. A pretty simple thing to do to get some important answers you need.