After 4 weeks straight of studying (technically more), my brain is starting to melt. But it's in there. All the information that I've accumulated throughout the year is definitely in there. I know this, because when doing group review, I'm actually able to make sense of things without my notes (most of the time). It's just a matter of pulling it out when required and making sense of it.
I've got two slogans getting me through this exam period: 'Don't panic.' -Hitchhikers Guide to the Galaxy; and 'Do, or do not. There is no try.' -Yoda
Oh, and just keep swimming.