If you are bipolar 2 then you should be on antidepressants....it is bipolar 1 that have difficulty with the antidepressants so maybe that was a typo.
What mood stabilizer do you take?
Lamictal has antidepressant qualities and many folks take this.
people have ect treatments to try to get them to a better place...this may be an option for you....
there is also an invasive device called VNS stimulator that is implanted...there may be some deep brain stimulators too.
I am hoping that you get some other replies....
I am so sorry that you are dealing with this.
I know of a suicide support forum at
neurotalk (a sister forum under psych central) for people who are suicidal and for those who have lost a loved one to suicide. google neurotalk....sos (survivors of suicide) in the index if you wish to post there...we welcome you. They will help support you. I will try to post a direct link, the registration is simple.
I am bizi there as well.

edited to say:
I jsut read your bio and see that you are bp1...so anti depressants need to be carefully monitored...I could take welbutrin at half dose when I needed it...am bp1 as well.

here is the link:
http://neurotalk.psychcentral.com/forum29.html