Why on earth did you wait so long? Your dentist could've resolved the dry socket issue in like 15 minutes. So remember that you have no reason to be scared, because if you have problems again, they are easily, quickly fixable.
As for being put to sleep, I'm familiar with it. Its not really scary. I will tell you exactly what I experienced with each time I had it done: The doctor had me sitting down. he put the IV in my arm and I was in the car with my dad, half-way home. That is the extent of my recollection of the events. Its really weird but wont make ya panic!