Ouh! That was brave of you! I did that too and was totally turned off about surgery for weeks! I actually had to pause the video and take a deep breath after watching just seconds once I saw the doctor cut the skin to create the first incision. I felt sick watching too. But I am 1 week post-op now (still can't believe I did this!).
All I remember is some guy (the Anesthesiologist) telling me, "I am going to give you something to relax now!" and that was it! All the sounds around me became louder than usual and everything went blurry, I could not lift my head (my arms were already tied down) and I was out! I then woke up in a different room with a different gown on and my stomach incredibly sore. I wasn't dizzy but I did have a lot of acid reflux. That is because I vomited the water they used to test my pouch for a leak during surgery. The other 3 people who had surgery the same day did not experience this and were charged from the hospital a day before me. After two days of throwing up (was pretty painful), I was finally able to keep liquids down. The only pain I have now is at my biggest incision (I only have 3 plus my drainer site). The only incision that hurts is the one my old stomach was pulled out of. When it hurts, it's healing so it's all good. I have gone from 199 lbs (gained weight from being on IV for 4 days) to 191 lbs in a week and today, 9 days post-op, I am 187 lbs.
Stay strong! You will do great!