I am sorry this has happened to you. Your co-workers (and boss, seemingly) are not nice people. BUT, that isn't to say there aren't nice ones out there. I work with some wonderful women, and count them amongst my good friends. It can work out that way, and when you consider that many of us spend most of our awake hours with our co-workers, it is an asset to have them also be your friends.

Hang in there, you will find something else.