I called LSAC to ask about this, and had a pretty friendly chat. The guy said he has heard proctors letting you run to the washroom if you have a few minutes left at the end of a section, or when the 1 min break starts. You will have to do a room scan and may shave a minute off your next section, but it was very helpful for me to hear that may be an option.

My plan, if I do feel I need to go during my exam (I don't have any accommodations but I'm a nervous pee-er and have a tiny bladder) is to tell the proctor I am wearing Depends but would rather not use them, and ask if I can run for the world's quickest pee.

That, or lady issues... lol.

You should get your email at 12pm EST. If it's your first time you can access ProctorU by going to login and resetting your pw, lsac creates an account for you but doesn't sent it until 12. I just did this and was able to schedule