The Bakery, if your family and boyfriend think you're a "nutjob" for seeing a therapist then I can only say that they must be very closed-minded and shallow people. But ... I think you'd be surprised how supportive they are, if you give them that chance.

Especially your boyfriend. If he loves you I'm sure he'd support you in therapy. Anything to help you feel better you deserve that much!
It would probably help you to talk to your bf or your family about the issues you're having. A problem shared is a problem halved. And if you really can't talk to them, well, you can do that in therapy, too.