Ok, that sounds like a tough experience but it also could have been the start of smaller exposure steps. You don't have to do what a therapists tells you. That's not a therapists job. I would suggest now that you are older and a little bit more experienced that you look on like Psychology Today or Counseling.org and search for a therapist in your area. There are even therapists who use horses and such to support exposure therapy.I have thought about it, but I had a bad experience with a shrink when they thought some medical issues I was having were "stress", so that's made me kind of hesitant to try again. After she put me on anti-depressants, I went from barely talking to people to putting myself in dangerous situations with people I barely knew. She wanted me to ride a bus downtown alone, which is just seems like too dangerous of an idea when you consider the fact I had never even stepped foot on a bus before, and had absolutely no idea where anything was downtown, and at the time I didn't have a cell phone.
Regardless, from what you post here the anxiety sounds very high and very debilitating. I think it's professional help level.