Antidepressants are often used in combination with other drugs in BP. Taken alone they sometimes trigger a manic phase. I take Wellbutrin, which is also an AD but I take other meds as well that keep me stable, and prevent a phase shift.
Good judgement comes from experience and alot of that comes from bad judgement.
You just have to accept that some days you're the pigeon, and some days you're the statue.