The best you can do is tell your prospective employer about the difficulties you had. No employer *must* provide references, and in the circumstances it might be better to get nothing than something critical.
Make detailed notes about everything you did, who you worked with, clients, customers etc., so you create your own 'picture' of the last 5 years. The main reason for references is to be sure you weren't in jail for something nasty. After all, new employer already likes you if they proceed to bother with references. If none comes, so be it. Just make sure they know you had a bad time before, so no-one get nasty surprise.