Question about anesthesia experience in Oral Surgeon's office..

Ok Kind of a long story... for all you anesthetists out there.. what do you think happened to me?

I had my wisdom teeth out about 2 years ago. I remember in the oral surgeon's office when I was out one of the nurses/assistants saying " her blood pressure is dropping' then I remember seeing a bunch of funky flashing colors in my head and my ears were ringing and then I was out again"... well I woke up and my shoes were off.. the oral surgeon wouldn't come and talk to me according to the assistant, and went into his office and slammed the door ( he has been known for his bad tempers).. she told me that everything went fine!
Well I went to my dentist last week... I happened to notice up on the screen a pop up box that says " anesthetic allergy"... I dont recall ever having a local anesthetic reaction or the dentist would have told me... so I am wondering what could have happened in the oral surgeons office? If it was something really serious wouldn't they have to have told me for future reference? Why did I wake up with my shoes off? LOL Did I almost die in the oral surgeons chair or something? It's kind of scary... Im questioning if something bad happened, such as me getting combative? Did I puke on him? What are some common anesthetic allergies seen in oral surgeon's offices? I dont know what kind of anesthesia was used, other than I know for sure I got some nitrous by mask before I was out...
Then again I went to have an appy a year ago and came out with no complications what-so ever..