One of the (unfortunately common) ways people learn that they have bipolar is by being mis-diagnosed with unipolar depression, being prescribed SSRIs, and suddenly finding themselves experiencing 'dysphoric mania'. Not the "everything's great, let's have sex with random strangers" type, but rather the "let's destroy every piece of furniture in the house" type.
But I don't know your situation other than what you've described, and I'm definitely not qualified to tell you what to do. The best I think you can do is to get a second opinion from a competent psychiatrist.