I hope your drugs help you more when the 20th to 22nd comes. Will your little brother be able to drive? It doesn't sound like it is safe for you to drive. Sometimes things can help us hang on and maybe the event will distract you from your suffering. Are you afraid that if you go to IP that they won't release you in time? Do you have a right to leave when you want to (especially if you tell them you feel OK around the 18th)? You do have some time to take care of this--6 whole days!!!