Does anyone else ever doubt their diagnosis?

I've been told bipolar 2 by two different therapists along with close friends. My current therapist has said that I am not bipolar, just dealing with other issues... I don't know what to think anymore. I see correlations with both ideas and am struggling so hard with who to believe. So much of a diagnosis depends on how you phrase your words and what you choose to disclose. I sometimes wish that there was a test that was at least nearly conclusive as to whether or not I had bipolar or not. Sometimes I feel fine and sometimes I feel like I have never been fine. I just don't know what to think about my "diagnosis" anymore that I don't know how to deal with it all.