Honestly its good you ask. You are not a baby. I had a terrible time with mine...and didn't expect it because, EVERYONE said it was a sinch. It depends on the where the nodule is located. Mine was in a place that there are tons of nerved endings next to the trachea. It spent me for the day and the bruising was really quite awful.
Now...I'm really skinny...so that probably made it worse for me too. Being unprepared made everything far more trying...and shocking. Its good that you are asking questions. I should have made arrangements to take the day off...because it wasn't "NOTHING" like I was told.