Ouch, that sounds sore! It is no surprise that back of your throat hurts! And I am imagining if this was me - having something close to my gag reflex in pain would trigger my stonach to tighten and I would get anxious and then I would feel sick and think I was going to get sick. You will be fine! It shouldnt hurt for too long, maybe some pain killer will help you get some rest/sleep, but I can assure you that is no reason to v*. Have a great trip!