I was diagnosed initially with depression, but after my pdoc had worked with me for a year I think it was, he was seeing a cyclical pattern to my depression and there was some hypomania showing. I didn't get diagnosed until I was 42. That was about 20 years after I was initially treated for depression. It took a very long time. Bipolar II is a bit trickier to diagnose as the major symptom is depression and we don't go into actual mania, but hypomania instead, and we don't do that very often. Makes for a slow diagnosis sometimes.