What's cerebral and what's situational- pondering the causes of depression.

 What if my medication isn't doing anything?  What if it is my belief in the medication that makes it effective aka the placebo effect?

It has been over two months since I first learned I might be bipolar. Since then, I have emerged out of depression and its medications, and into the experience of bipolarity, and its medications. I wonder, what would have happened if I hadn't asked about bipolar disorder in that appointment with the doctor?