I'm 28 and just got all 4 of my impacted wisdom teeth removed today, literally 8 hours ago. Like you, I was unbelievably terrified. I cried so much leading up to today. But they gave me valium to take the night before and morning of which really helped. I got there, sat in the chair and the doctor told me I had nothing to worry about, even though my bottom right was troublesome and setting close to a nerve he was so confident in his ability that everything would turn out great. He kept telling me he does this 10 times a day every day for years and no one has had complications yet. So he put the needle in my arm and said I was going to start feeling relaxed. Next thing I know I'm in a wheelchair outside and a nurse and my mom are helping me get into the car. I seriously could not remember a thing. I didn't feel myself drift off. It literally felt like one of those nights you can't remember falling asleep and you wake up kinda surprised ya know?
I had an hour and a half long drive back home, so by that time the pain started to kick in, it's more of a dull burning ache, but I popped two ibuprofen and around 30 minutes the pain left and I was able to sleep for a few hours. The only annoying bit is keeping/ changing the gauze.
My advice is to make a consultation with a reputable oral surgeon office, talk to them and ask them everything. I would highly recommend the anti anxiety pills. I even had to give myself a 30 minute pep talk just to take my valium because I'm also very scared of new medications turns out nothing to be worried about, they don't make you feel anything but calm, same as the iv sedation.
I wish you the best of luck and much courage. If you would like, I can come back and update you on my overall recovery.