Later in the day of the procedure, I wouldn’t try to go to work, but the following day, you’ll be fine. So if it’s scheduled on a Thursday, you can go to work Wednesday and Friday, but depending on your job, you may want to leave a little early on Wednesday. Begin the bowel prep at home at the time they told you (probably 5:00), and follow Lynn’s recommendations re: comfortable clothes and wet wipes. Whatever you do, don’t even think about taking the prep at work and gambling you’ll make it home before it starts working. You may, but you may not, and it’s not worth the risk.
Thursday you’ll wake up and go to the medical clinic or wherever they’re doing the procedure. They’ll put an IV in your hand or arm, come talk to you and explain the procedure again, ask if you have any questions and have you sign a form or eleven. They’ll probably put some of those sticky electrodes on you for an EKG, and a plastic clip with a light on it will go on your finger to track your oxygen level. Then they’ll wheel you into another room, probably with a big TV on one wall.
Everyone will come in the room who should be there (probably nurse, technician and doctor, maybe one other assistant or a trainee or student) and then they’ll stop and ask you your name and birthdate. They’ll all tell each other they’re there for a colonoscopy on [yourname] and you’ll agree with them. (This is a “Time Out”, designed to make sure they don’t accidentally amputate your leg while you’re in there. Everyone has to know what patient, what procedure, etc.)
That’s all you’ll remember for a while. While you’re woozy, they’ll be moving you around (actually, you’ll move yourself around with their help, but you probably won’t remember it later) as the doctor feeds a long tube up your butt. The tube carries a camera and a light and an air blower thingy, and several surgical tools in case they find anything interesting up there they decide to biopsy.
The next thing you’re likely to be aware of is waking up in recovery, where a nurse will come and press on your belly and ask you if it hurts. He’ll remind you that it’s normal to fart a lot and don’t worry about it - the doctor blew air up in there to see better, and that air will make its way out. You’ll probably spend about an hour in recovery and then they’ll let you go home.
Don’t make any passwords the day of your procedure. You’ll probably have gotten Versed, which gives you amnesia (which is why you won’t remember what happened during the procedure) and it can take longer than you think to wear off.
I would not recommend going home alone, but that’s because it just isn’t done here. I’ve worked in a couple of colonoscopy clinics, and they’re adamant that you go home with an adult, who can make sure you get to the ER if you end up suffering ill effects from the drugs or bleeding internally from a perforated colon.