Jane,
Welcome to SR. I agree that you should probably go in-patient or at least under a doctors care. WD is not easy. I went cold-turkey off heroine, and it wasn't easy. And I was also at one time on a low dose of xanax that I didn't abuse, but you still go through withdrawl from it. That was hard too.
After you are done detoxing, try to find some type of face to face support, like NA. 12 step programs have proven themselves by helping countless numbers of addicts over the years.
Hang in there, I'll keep you in my prayers.
Laurie D
Oh, by the way,I don't know about the clonadine patch, but some of the detoxes around here use the catapress patch for heroine withdrawl.