It's good to hear that you at least told your therapist, what about your doctor? I don't know what method you used (and please don't tell...) but a lot of methods can cause lasting damage.
Whether or not to tell your family is a tricky one, your therapist might be one to ask about that too...
I have never been able to tell my family about all my attempts, my mother knows I can be suicidal (I had to make her understand I do need therapy... even if she still thinks getting a job will cure everything.)
Sorry I can't give you better advice here. But I do think that confiding in someone, be it a family member or a good friend can help take some of the burden off, and they can help you in your recovery and try to help you against future attempts.