I wasn't diagnosed bipolar till I was 53, so it's definitely possible that you have the illness and just haven't been properly diagnosed yet. Being on Prozac without a mood stabilizer isn't usually a good idea for people with this illness......I can't even imagine what 60 mg of an antidepressant would do to me! But then, I was on unopposed antidepressants for years, and they'd always stop working after a few months.....looking back, I can also see times when I was hypomanic or manic on those drugs (usually when I had a dosage increase).

I'll admit, it was very hard on me to be handed this diagnosis that late in life, but at least I finally had a name for the shadow that had dogged my heel throughout most of my life. There are worse things. Wishing you the best of luck.