I wouldn't want to influence you in this pre-diagnosis stage, but there are some books that I have read that might help you. I'd suggest running them by your shrink first, though. I find DID to be a very interesting coping mechanism, so I've read a little. The human mind does the most amazing things...
1.
First Person Plural: My Life as a Multiple by Cameron West (he was a guest on Oprah when it first came out)
2.
When Rabbit Howls by Truddi Chase
3.
A Fractured Mind: My Life with Multiple Personality Disorderby Robert B. Oxnam (haven't read, but it's just come out)
4.
Sybil by Flora Rheta Schreiber (the movie with Sally Fields was based on this book)
I truly hope that things work out for you. From everything I've read, it's a hard road to "wellness" or wherever you want to end up. But, with a good therapist and some support, you can do it. Cameron West, author of #1 on the book list, got his PhD with twenty-something alters aboard, for example. Best of luck, and don't stop writing in.