What a cool experience! First I was SO nervous and a little scared. I had mine done in radiology with my doctor and the radiologist. I got to see everything on the monitor. Both doctors were so gentle and the actual shot part was nothing more than a little pinch on my tummy however I would advise not to look at the needle but then again I’m one of those people that passes out getting my blood taken. It was really neat to see the barium after I swallowed it to go down to my band and pass on. As for the feeling of your band tighten, you can feel that just a little. No pain what so ever. Just feels like something giving your stomach a little hug were the band is. I have a 10cc band and had 3cc filled from surgery so now I had 1.5cc put in today for a total of 4.5cc. Hope this helps calm the minds of others going in for their first fill. GOOD LUCK EVERYONE!