I was diagnosed with bipolar disorder?

If you're a danger to yourself, go to the hospital. If you think about it, suicide is the truest mental illness. We can't kill ourselves by holding our breath, stopping our hearts, or turning off our brain because the body is designed to live. In the meantime, bipolar or not, our emotions are always in flux. Do things that are calming (like listening to gentle music, engaging in a hobby, drinking herbal tea, talking with someone who is nice, going for a quiet walk, etc.) and rest assured that the pain you feel now will pass.

Take a bath first calm down, sleep

If you are seriously thinking of harming yourself, call an ambulance or go to your nearest hospital's ER.

Wait until your appointment your doctor will prescribe you antidepressants and anxiolytics to control your mania/depression mode changes but it won't be enough you have to go through serious CBT that will decrease your sypmtoms of bipolar disorder as well as suicidal thought will be gone.
Try to be positive