All the advice above is so true and reading it is even giving me some comfort knowing someone else out there is going though the same thing as me! Anyway my little bit of advice for you is if you have long hair maybe get it cut to a manageable length, because it is so hard to do it or put it up when you can't lift your arm above your head, so washing it is really hard too. Either that or assign one of your friends or family the job of helping you with your hair. I know it's not about how you look but when you go through something like this, it helps if you can get up in the morning and fix your hair & make yourself feel a little better.
Good luck on the 11 th you'll be fine.
Linda